30. Look! Many girls _________ (dance) over there.

B. 按要求改写下列句子，每空一词。(5分)

29. He _________ ( read ) an English book now.

28. Look at those clouds. It _________ (rain ).

27. Betty _________ ( write ) to her parents tomorrow.

26. They _________ ( not have ) any classes next week.

25. Please buy some _________ (toothbrush) for them.

Part Two. 同步语法: (10分)

A. 用括号内所给词的适当形式填空。(5分)

24. Today is Sunday. Let's go ________ (skate).

23. I can do my homework by _________ (I).

22. There is a tall _________ (build) in front of the post office.

21. She wants to be a _________ (science) when she grows up.