25、 ― Have you finished the work?

― Not yet. I _______ to do it just a moment ago.

A. set off       B. set up     C. set out         D. set down

23、 A man who hesitates ______ everything cannot do anything successfully.

A. to do       B. doing        C. for doing             D. in doing

22、John walked on the sand, thus ______ many footprints.

A. left        B. to leave       C. leaving     D. leave

21、---Tom graduated from college at a very young age.

---Oh, he ____ have been a very smart boy then.

A. could        B. should        C. might       D. must

20、Surprisingly, his new play, commonly supposed to be of high quality, turned out to be _______.

A. a success   B. a failure      C. failure       D. success

19、The workers spent as much time as they could        more products to meet the   growing market.

A. produce                       B. to producing         C. producing            D. produced

18、A new cure for the disease is ______ to be discovered.

A. like                             B. likely                      C. possible                 D. probable

17、 He sent her a telegram ______ his immediate return to London.

A. announced        B. announcing       C. has announced     D. announces

16、 The school has ______ a special class to help poor readers.

A. set up           B. set aside     C. come true        D. come into being