1. has met

2. has already finished

3. haven't met

4. have they met

5, met

6. were you doing- were watching

7. were - lived

8. came

9. to use 

1.This is the first time Hoa (meet)____has met_______ Tim’s family.

2. He (already finish) __has already finished______________ his work.

3. They (not meet) _____haven't met_________ their friends yet.

4. Have They (meet) met_______________ their friends yet?

5. They (meet) ______met________ their friends yesterday.

6. “What did you (do)__do___________ at eight o’clock last night?” - “We (watch)___watched_____________ television.” 7.When we (be)_were______ young, our family (live)__lived_______ in the countryside.

8. Mrs Nga was cooking when Nam (come)__came_________.

9. I don’t know how (use)____to use____ the sewing machine.