1、 Why are Don and Tames such good friends? What do they have ------?

2、 John and Sally ------all their problems cheerfully.

3、 This letter is so badly written that I can’t------ what the writer is trying to say.

4、 Even if he------ here, he would not be able to help us.

5、 We tried ------to reach you last night, but your phone was always busy.

6、 -------in space, the satellite sent us a great deal of information.

7、 We------- gas right in the middle of the main street and blocked traffic.

8、 If he ------the problem well, he couldn’t have solved it.

9、 He is------ the lower branches of the trees.

10、 The boy asked the teacher to excuse -------.

11、 Much ------, TV sets are being produced in larger and larger quantities every year.

12、 I couldn’t fall asleep unless I exercised ------of exhaustion.

13、 ------the right address, we found her house easily.

14、 Neither John nor his parents------ at home.

15、 Can machines perform the same tasks ------?

16、 We believe him to------ a mistake.

17、 When I visited your country again last year I found it completely -------.

18、 If Julia had told me in advance, I------ her at the airport.

19、 I can’t help------ about what he said once again.

20、 I don’t think he is n man -------.