Grammar page 283 ex. 4, 284-285:

Page 283 ex. 4:

1. a: Are these your keys?

   b: Are those your keys?

2. a: Is this the library?

   b. Is those the library?

Page 284 ex. 1:

1. Sorry. I haven’t got one.

2. No. I got the blue ones.

3. No, thanks. I’ve just have one.

4. Yes, There’s one over there.

5. No. They’re old ones.

6. The one on Queen Street.

7. It’s either this one or that one.

8. Which one is yours? The stripy one or the checked one?

   The checked one.

Ex. 2:

1. Which umbrella? The big one or the small one?

2. Which door? This one or that one?

3. Which dress? The black one or the white one?

Ex. 3:

1. No. This one is fine, thanks.

2. Either one. They both go to the town centre.

3. No. Neither one looks very interesting.

4. No. Each one is different when you get inside.

5. Which one?

   The one we saw in the paper yesterday.