用动词的正确形式填空.
1.He （）（see）the policeman last night.
2.Thanks for （）（join）us,Alice.
3.He put down his books and（）（go）out of the room.
4.（）（not talk）.It's time for class.
5.She came to the city（）（see）her mother.
6.I must（）（finish）my homework first.
7.Could you please（）（help）me with the housework?
8.This morning I（）（show）my friend a new wallet.