用括号里的词的适当形式填空。 

1. I have lost the address. What______ I _______(do) ?

2. Could you please______ (not laugh) at others?

3. After an hour, they _______ ( finish)their homework and ______(go) shopping.

4. The parents are always________ (complain)about their children's rudeness(无礼、粗鲁).

5. They don't know why you talked to them so _______(angry) .