题目内容：

改写句子  按括号中的要求完成句子，每个空格填一个单词。

1.Peter has to stay at home on school nights.  (改为否定句)

Peter __________ __________ to stay at home on school nights.

2.My sister exercises at least twice a week.（就画线部分提问）

_________ _________ does your sister exercise?

3.“Why are you late?” The teacher asked Anna. （改写句子，句意不变）

The teacher asked Anna _________ she _________ late.

4.It’s the duty for everyone to keep our city clean and beautiful.  (改写句子，句意不变)

Everyone is ___________ ___________ keeping our city clean and beautiful.

5.We believe our learning habits can make a big difference to our schoolwork. (改写句子，句意不变)

We believe our schoolwork can __________ ____________ a lot by our learning habits.