9、
【1】We students should give some books away to the poor students.(改为否定句)
We students_________ give _________ books away to the poor students.
【2】I was writing a letter when my mother got home. (对划线部分提问)
______________________ you doing when your mother got home?
【3】To keep healthy, you’d better stop smoking at once. (改为同义句)
To keep healthy, you’d better ___________________ smoking at once. .
【4】如果你觉得有病就不应该拖,要尽早就医。(完成译句)
If you think you are sick, you should not _______________going to the doctor.