1. Open the brackets:

1) When Liz (to walk) along the road, she suddenly met her friend.

2) Lions (to run) very fast.

3) Jane (to talk) over the telephone now.

4) His sister (watch tv) at 6 o'clock yesterday.

5) They (not to see) this cathedral yet.

6) Calvin and Sally (to go) to the picture gallery tomorrow.

7) My Mother (to take) care of our pet.

8) It (to snow) at 5 o'clock yesterday.

9) Ann already (to translate) this book.

10) Yesterday I (to paint) the picture in oils.

1) was walking

2) run

3) is talking

4) was watching

5) have not seen

6) will go

7) takes

8) was snowing

9) Ann has already translated

10) painted