P. 189 ex. 1
b) Mum, can you give me a hand, please?
c) Could you do me a favor Mrs Bond?
d) We were able to enter without tickets and enjoyed the concert.
e) I don't think I'll be able to see you tonight.
f) Were you able to see Emma yesterday?
g) When he was younger he could run 20 km.

Ex. 2
b) He said he was innocent, but you can tell he was lying.
c) I'm afraid I won't be able to join you tonight.
d) Are you cooking fish? I could smell it.
e) Did you managed in talking to Mr Robinson about your promotion?
f) Guess what! I succeed to find the tickets for the cricket match.
g) Some kinds of parrots can imitate people's voices.

Ex.3
b) May I ask your age, madam?
c) In Italy you can't marry before the age of 18 without your parents' permission.
d) Could I borrow your umbrella? No, you can't.
e) There's a bus strike today. Could you pick up the children from school?
f) Could you phone the restaurant and book a table for two?
g) Children are not allowed to play ball game in this playground.

Ex.4
I'm enjoying life in a small village after London. Of course when I was in London could do anything I wanted - I could go to the cinema or the theatre, meet friends, eat out, follow an evening course, do any sport. Here in Pennington I can't really do this things easily. But I hope they when I get my new car next week I'll be able to travel to nearby towns and take advantage of the things on offer. I enjoy being able to take a work in the woods when I want and getting home from work in only 10 minutes. In London I couldn't get home from work in less than 45 minutes and I love being able to spend more time at home relaxing.

Ex.5
P1: Excuse me, could I borrow your newspaper?
P2: of course. Here are you. And may I close the window?
P1: Go ahead. It's cold today. Can you manage?
P2: No, it's stuck. Can you help me?
P1: Certainly. Could you hold my coat for a moment? There you are.

P. 191 ex. 1
b) Could/ can you tell me the time?
c) Shall we go for a walk later?
d) Can you close the window Pete?
e) Excuse me, could I have your autograph?
f) Will you do me the honor?
g) Can we all go in one car?
h) Can/Shall we meet directly at the airport?

Ex.2
Jackie: Would you do that? That's great, thanks. I'll tell you all the details.
Jill: Ok. Would you like me to speak to your mom too?
Jackie: Wwll, I don't want to worry my mum now. But il Hellen refuses to talk to you, I'll tell her.
Jill: Are you sure it's a chat and not research for school?
Jackie: When I look at the screen all I see are little boxes full of words. That's not research. And I looked at her school work. It's terrible!
Jill: I see. Would I speak to her tomorrow afternoon? Shall you call me when she gets home?
Jackie: Oh yes, great. Thanks Jill. Would you mind not telling anyone about this?
Jill: Of course not. My lips are sealed.

P. 195 ex. 1
b) All the people who work here must clock in at 7.30.
c) We haven't to rush to the station - it's only 5 minutes away from here.
d) I'm afraid we'll have to call your parents and tell them about your misbehaving in class.
e) We mustn't forget to pack our camera!
f) She haven't to worry about her future. Her parents are wealthy.
g) Sorry for walking you up this morning, but I must take the earlier train.
h) The children haven't to play with my computer. It's that clear?

Ex.2
b) Do you have to work on Saturday?
c) Tomorrow I must go to the dentist.
d) You must be carful when you crossing the road.
e) Excuse me sir, you can't smoke here.
f) you have to stay outside, they'll call you when it's your turn.
g) Bags can't be left unattended.
h) You can't park here unless you work in this building.

Ex. 3
N: Can I use the computer to send emails?
F: Yes, you can. You can surf the net whenever you like. We have 24h free connection. Of course you aren't allowed to download films or music, you know, it's forbidden.
N: I know. Am I allowed to play music?
F: Yes, you can, but not too loud.
N: Oh no, I won't. You see, in the other family I was living with I had to put on headphones if I wanted to listen to music.
F: You haven't to use headphones here, don't worry.
N: Thanks.
F: You are welcome. Oh one more thing. You absolutely mustn't smoke in there. And of course no alcohol. And you aren't allowed to have friends stay over either.

Ex.4
b) The doctor says I have to lose weight.
c) You must stop smoking if you want to get better.
d) The judge said that you had to stay away from her.
e) One day we must function without oil.
f) We don't have to wear uniforms in school, we could wear whatever we wanted.
g) At least you mustn't change trains.
h) You mustn't enter when mass is in progress.
i) You have to leave at once!

Ex. 5
b) In countries like England, Australia and Japan, you have to drive on the left.
c) You don't need to type all those poems. You can download them from the Internet.
d) We have to return all library books by the end of the month.
e) You mustn't work so hard or you'll become ill.
f) You don't have to pay for the water. It's free.

Ex. 6
You must look in your rearview mirror regularly to see the cars behind you. Now, this is a roundabout. You mustn't drive fast, if you go too fast you risk an accident. Now, move forward and drive to the right. You have got to put your indicator on left, to show you are continuing. Before leaving the roundabout, you must indicate right. Fine, now remember, you have got to obey the speed limit. Now here's a stop sign, so you must stop. At the next road you have got to turn left. The road to the right is a one-way street. You have got to go that way.

P. 198 ex. 1
b) You should take your work more seriously.
c) My train is in a hour. I ought go now.
d) I don't think you should listen to Stella.
e) I feel so embarrassed. What should I do?
f) What a nasty cough! You ought to see a doctor.
g) We had better check the train timetable before we leave.
h) You oughtn't to write in library books.

Ex.2
b) I had better not make th same mistake again.
c) I can't see well. I don't have my eyesight checked.
d) We had better call a taxi now. It's late.
e) Shall we make another appointment for the next week?
f) Where is he? He ought to be home by now.
g) You had better to show your mother those dirty clothes.

Ex. 3
You shouldn't underestimate the problem. Have you got any other symptoms? You oughtn't take too many aspirins. Try these remedies: you should drink at least a liter of water every day , and you shouldn't eat chocolate for a few days. Also, you had better to ask for an allergy test, as this might be the cause. You should sleep for at least seven hours every night, perhaps you're tired p. And I know you're studying a lot at the moment p, but you ought to take a rest sometimes. You had better go for a walk or do some exercise outside in the fresh air.