1、单选题：
So far nobody has claimed the money ____ in the library.
选项：
A:to be discovered
B:discovering 
C:discovered 
D:having discovered
答案: 【discovered 】

2、单选题：
Many buildings in the city need repairing, but the one___ first is the library.
选项：
A:repairing
B:to be repaired 
C:repaired 
D:being repaired 
答案: 【to be repaired 】

3、单选题：
That is the only way we can imagine ___ the overuse of water is students' bathrooms.
选项：
A:to reduce
B:reducing
C:reduced 
D:reduce
答案: 【to reduce】

4、单选题：
A great number of students ___ said they were forced to practice the piano.
选项：
A:questioned 
B:to be questioned 
C:questioning
D:to question
答案: 【questioned 】

5、单选题：
Now that we've dicussed our problem, are people happy with the decisions ____?
选项：
A:to taken
B:taken
C:taking
D:take
答案: 【taken】

6、单选题：
The players ____ from the whole chountry are expected to bring us honor in this summer game.
选项：
A:having selected
B:to select
C:selecting
D:selected
答案: 【selected】

7、单选题：
On receiving a phone call from his wife _____ she had a fall, Mr Gordon immediately rushed home from his office.
选项：
A:says
B:said
C:to say
D:saying
答案: 【saying】

8、单选题：
The island, ____ to the mainland by a bridge is easy to go to.
选项：
A:having joined
B:to join
C:joined
D:joining
答案: 【joined】

9、单选题：
The rare fish, ____ from the cooking pot, has been returned to the sea.
选项：
A:to be saved
B:saving
C:saved
D:having saved
答案: 【saved】

10、单选题：
Mrs.White showed her students some old maps ____ from the library.
选项：
A:borrowed
B:to be borrowed
C:borrowing
D:to borrow
答案: 【borrowed】