用动词不定式把句子改编

题目

用动词不定式把句子改编
1.To get home on time is important.
2.It is so great to be you friend.
3.It is not right to talk with your classmates.
还有一题：
4.To sing English songs is very interesting.
是相对的

答案

It is important to get home on time.
To be you friend is so great.
To talk with your classmates is not right.
It is very interesting to sing English.