3. They wanted………………….. how I learnt English.

A. know         B. to know        C. knowing               D. to knowing
9. He _______________ his assignments before going to bed last night.
A.  finish        B. finished        C. has finished         D. had finished
11. They remembered ……….. a project about the environment last month.

A. make         B. to make        C. making                D. makes