Change the following sentences from active into passive

1. They haven't finished their work

2. They didn't pay Jack for what he did for repairing their house

3. The police caught the murder when he was buying a plane ticket for an overseas trip

4. Mai didn't introduce me to her mother

5. A computer can do these calculations much more easily and quickly

6. A terrible flood has destroyed their house

7. The police shouldn't allow people to park their cars on the pavement

8. You mustn't move this man ; he is too ill. You'll have to leave him here

9. Candidates have to hand their answer sheets after 1 hour

Give the correct form of each verb in brackets to complete the following sentences

1. Some kinds of fruits in Vietnam (export) ..... to Europe every year

2. The liquid (heat) ...... to a boiling point

3. Nam is very tired now. He (study)...... in his own room since breakfast

4. You (hear) ...... from Mai recently?

5. My father ( not drive) ........ a car since that accident

6. That is the third time he (write)...... to her

7. Everything is going well . We (not have) ..... any problems so far

8. The meeting (hold) ....... in Hanoi next week

9. This program must be new so it should (test)...... carefully

10. It's nice to see you again . We ( meet) ...... each other before?