1.I will fly to Tokyo _______ next month.

1.I will fly to Tokyo _______ next month.
A.sometimes B.sometime C.some time D.some times
2.We should keep the classroom clean.(改为一般疑问句）
______ we _______ the classroom clean?
3.A sore throat may ______ (cause) a fever.
4.Could you take care of my cat?(改为同义句）
Could you ______ ______ my cat?
5.I finished my homework.Then I went to bed.(合并为一句）
I ______ go to bed _______ I finished my homework.
6.I hope I can improve my English soon.(改为同义句）
I hope ______ ______ my English soon.