4. A. If you drive carefully, everyone can enjoy a long life.

B. ____ carefully ____ ____ everyone can enjoy a long life.

3. A. I don’t know why they quarrelled.

B. I don’t know ____ ____ why they quarrelled.

2. A. We didn’t know when the meeting would begin.

B. We ____ ____ ____ when the meeting would begin.

1. A. I was still so angry I decided to tell him what I thought of him.

B. I was still so angry that I ____ ____ to tell him what I thought of him.

10. The day____ yesterday they paid a visit ____their teacher_______ their way back.

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9. Don’t believe____ him. He is always playing some tricks.

8. The young man was put____ prison____ destroying the bridge.

7. He ran____ a thief____ the direction____ the gate.

6. I think we have a lot of interests____ common.

5. She was angry____ her son____ having told a lie.