Exercise 1

1. You must listen to your teachers. Listen to your teachers!
2. You mustn't be noisy. Don’t be noisy!
3. You mustn't cheat. Don’t cheat!
4. You must sit at your desk. Sit at your desk!
5. You mustn't be late. Don’t be late!
6. You must write tests. Write tests!
7. You mustn't bully your classmates. Don’t bully your classmates!
8. You must pay attention. Pay attention!

Exercise 2                                           

1.  He should have a job. Let him have a job!
2.  We mustn’t stop now. Let us not stop now!
3.  You must go to bed. Go to bed!
4.  You should get up early. Get up early!
5.  You mustn’t stand here. Don’t stand here!
6.   She can have a drink. Let her have a drink!
7.  They must clean the carpet. Let them clean the carpet!
8.  We needn’t wait for him. Let us not wait for him!
9.  We must have a shower first. Let us have a  shower first!
10.  You can’t park in this street. Don’t park in this street!
11.  You must be here soon. Be here soon!
12. They should taste this cake. Let them taste this cake!

Exercise 3

1.  Do be quiet. (must) You must be quiet.
2.  Let me finish it first. (would like) I would like to finish it first.
3.  Repair your roof. (should) Tou should repair your roof.
4.  I’ll dust the furniture and you hoover. (can- can) I can dust the furniture and you can hoover.
5.  Let’s not go on foot. (should not) We should not go on foot.
6.  Drive slowly, will you? (must) You must drive slowly.
7.  Don't be angry. (mustn't) you must not be angry.
8.  Hurry up. (must) You must hurry up.
9.  Let them make an experiment. (can) They can make an experiment.
10.  Do not touch the screen. (must not) You must not touch the screen.
11.  Do not let us worry about it. (need not) We need not worry about it.
12.  Let us see them tomorrow. (could) We could see them tomorrow.
13.  Come to my birthday party, will you? (must) You must come to my birthday party.

Exercise 4

1. Give it to your mum. Give it to your mum, will you?
2. Let us forget about it. Let us forget about it, shall we?
3. Let's think about it. Let us think about it, shall we?
4. Be kind to her. Be kind to her, will you?
5. Let us have a break. Let us have a break, shall we?
6. Take the car to the garage. Take the car to the garage, will you?

Exercise 5

1. I don't have my credit card. (pay)  You pay!
2. You needn't be afraid of the exam. (try it) Do try it!
3. I'm not going to inform her. (tell) You tell her!
4. Why should I carry the luggage? (take it) You take it!
5. Why don't you want my money? (take it) Do take it!
6. You are so noisy! (be silent) Do be silent!

Exercise 6

1. the/you/ladder/will/fetch. Fetch the ladder, will you?
2. him/it/try/let/again. Let him try it again!
3. use/umbrella/do not/my/him/let. Don’t let him use my ombrella!
4. first/the/take/on/right/the/turning. Take the first turning on the right!
5. mistake/us/not/make/let/a. let us not make a mistake!
6. do/seatbelt/your/fasten. Do fasten your seatbelt?
7. quickly/it/you/will/do. Do it quickly, will you?
8. about/protest/let's/don't/it. Don’t let us protest about it!
9. car/my/in/jump. Jump in my car!
10. tell/things/me/such/don't. don’t tell me such things!
11. ask/it/do/about/her.  Do ask her about it!
12. them/our/sleep/let/bedroom/in.  let them sleep in our bedroom!