Ex 1.
1. b
2. a
3. b
4. c
5. a
Ex 2.
1. You can take a lot of pictures. I’ve got an extra film.
2. You can’t use a credit card. We only accept cash.
3. You can buy souvenirs here. We’ve got a big selection.
Ex 3.
2. I'll meet you at six.
3. I'll call him now.
4. I'll ask her.
5. I will not buy it.
6. I'll get my umbrella.