23. 这个标识告诉我们每辆路经学校的车必须放慢速度。

The sign tells us that each car must 　_____　 　as it comes near the school.

22. 现在他正忙于研究改进这项工作的软件。

Now he is 　_____ 　studying the soft ware to 　_____　 　the work.

21. 我们应该种更多的树,使我们的城市更绿。

We should plant 　____　 　trees to make our city 　　____　 　.

20. The little boy can hardly dress himself. (改为反意疑问句)

　 　The little boy can hardly dress himself, 　　　　　　　?　

C.根据所给汉语句子完成英语句子，词数不限。

19. Work hard, or you’ll fail the exam. (改为if引导的状语从句)

　 　If you 　　　　　　　　hard, you’ll fail the exam.

18. They found the thief steal in the shop yesterday.(改为被动语态)

　 　The thief was 　　　　　　　　steal in the shop yesterday.

17. My mother told me to clean my bedroom every morning.(对划线部分提问)

　　　　　 　　　　　your mother tell you to do?

16. The students are working hard at their lessons.(改成感叹句)

　 　　　　　　　　the students are working at their lessons!

15. The teacher always takes good care of the children in the school. 　 The teacher always 　　　　　　　　　　the children well in the school.

B. 根据要求改写下列句子，每空只填一词。

14. That day we could see flowers here and there. 　 　That day we could see flowers 　　　　　　.