I. Chia động từ

1. How long (you,know)..did you know...........each other.

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

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

4. What (he,do).....was he doing......when he(meet).......met....you?

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

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

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