Underline the correct item
1. Don't forget to lock up until/ before you go to bed
2. We can buy tickets when/ until we get on the boat
3. While/ After I was watching TV, the programme was interrupted
4. As/ After I was cooking, the oven exploded
5. Until/ By the time we got to the party, nearly every-one had left
6. You mustn't talk while/ until you are sitting an exam
7. We went into the lecture hall just as/ while the pro-fessor began speaking
8. He didn't get home until/ after 12 o'clock
Underline the correct item
1. Don't forget to lock up until/ before you go to bed
2. We can buy tickets when/ until we get on the boat
3. While/ After I was watching TV, the programme was interrupted
4. As/ After I was cooking, the oven exploded
5. Until/ By the time we got to the party, nearly every-one had left
6. You mustn't talk while/ until you are sitting an exam
7. We went into the lecture hall just as/ while the pro-fessor began speaking
8. He didn't get home until/ after 12 o'clock