Viết lại các câu sau

1/ They were such difficult assignments that all the students couldn’t do them. → The assignments were 2/ They decided to postpone their picnic because it rained heavily yesterday → It
3/ Shall we take a shower instead of a bath ? → I suggest
4/ Keep the environment clean or we won’t live a healthy life. → If
5/ Because of his broken leg, he couldn’t go to school. → Because
6/ Why don’t we go for a walk? → What about
7/ Because he was careless, he broke the glass. → Because of his
8/ They are fast runners. → They