Choose the correct variant.
6. I saw my sister … a pie.
a) cooked b) cooking c) to cook
7. I didn’t notice … in.
a) they come b) them to come c) them come
8. Did you hear Sally … at the party?
a) to sing b) singing c) sang
9. Are you fond … reading?
a) at b) in c) of
10. I …. drive the car last year.
a) used to b) use to c) didn’t used to d) used