9. ―Mike may be in the classroom, I think.

—No,he______ be in the classroom. I saw him go home a minute ago.

8. —I haven't got the reference book for English yet, but I'll have a test on the sub?ject next month.

 ―Don't worry. You ______ have it by Friday.

7. ― Is there an express to Shanghai tonight?

―There ______ be,but you'd better call the booking office to make sure.

6. ―May I smoke here?

―If you ______， choose a seat in the smoking section.

5. ―_________ she start at once or wait for a while?

―Let her start at once.

4. You don't have to know the name of the author to find a book. You__ find the book by the title.

9. ―Look! Someone     the floor.

―Well,it wasn't me. I went shopping just now.

A. had swept    B. has swept

C. was sweeping  D. is sweeping

3. ―It is rather cold here. Shall we light a fire?

―No,we______. Because things here are easy to catch fire.

2.    —Must I take a bus?

—No,you______ . You can walk from here.

 用適當(dāng)?shù)那閼B(tài)動(dòng)詞填空

1. It is usually warm in my hometown in March, but it______be rather cold sometimes.