past simple&past perfect
1.    I __________________ (tell) him that I __________________ (never/see) her before.

2.    We ________________ (not/imagine) that such thing _________________ (happen).

3.    Yesterday he ______________(repair) the bicycle which he _____________ (break).

4.    They _________________ (eat) the ice-cream which I _________________ (buy).

5.    We ________________ (gather) some mushrooms and _____________ (cook) soup.

6.    I _______________ (not/believe) that he _________________ (murder) that person.

7.    She _______________ (be) angry with him for what he ___________________ (do).

8.    The child _______________ (give) his mother the card, he ______________ (draw).

9.    The doctor ________________ (show) me the tooth he _______________ (pull) out.

10. When they ________________ (buy) a ticket, they ________________ (can) enter.