Grammar exercises. Pages 14 and 15 of the workbook (answer key)

Exercise 2 page 14:

1. I bought a cup of coffee while I was waiting for the train.
2. Sally went to a party last night and had a great time.
3. Did you visit Buckingham Palace when you were in London?
4. We didn't hear the doorbell because we were sleeping at nine o'clock last night.
5. I dropped my iPod as I was riding my bike.

Exercise 3 page 14:

1. When did the supermarket open?
2. Were you at the meeting last night?
3. What were you doing at eight o'clock last night?
4. How was Sue's performance?

Exercise 4 page 14:

1. a
2. b
3. b
4. a

Exercise 7 page 15:

1. What time did your train leave Victoria Station?
2. Last summer, my family didn't go camping because the weather was bad.
3. When I was a child, I lived in Ireland for two years.
4. I was playing on the computer while my parents were unpacking our bags.
5. By the time we arrived, everyone had left.