1 . He used ________ (be) one of my professors. （所给词的适当形式填空）

2 . When they met again, they were too excited ________(say) a word. （所给词的适当形式填空）

3 . It is not a simple matter _________(determine) the nature of talent.（所给词的适当形式填空）

4 . I'm quite satisfied, and I prefer ________(rent) such an apartment rather than buy one. （所给词的适当形式填空）

5 . Hearing the scene is very attractive, I can’t wait _________(go) there.（所给词的适当形式填空）

6 . An actor must be able to ________ (memory) his lines. (所给词的适当形式填空)

7 . After that，I set out________(read) widely for an inspiring topic，wrote a speech，and practiced its delivery in beautiful pronunciation with good public speech skills.

8 . Those who are not open to the world all the time are bound ___________(fail) in the end. (所给词的适当形式填空)

9 . The boy quarreled with his father and left home, determined never ________(come) back again. （所给词的适当形式填空）

10 . The man who has made up his mind ________(win) will never say “impossible”. (所给词的适当形式填空）