I. Chia động từ

1. How long (you,know).....have you known........each other.

2. We (know)..have known............each other for more than two years.

3. How did you know each other ?-Oh,I (work)....have worked.........in the factory when I met him.

4. What (he,do)......have he done.....when he(meet)......met.....you?

5. ....Have you been..........(you,be)to Ha Long Bay ?

6. I(go)...went........there last years.

7. Some documents (steal)......were stolen......last night.