20.Nearly every great building in Beijing was built＿　 south.

A.to face　　　　　　　　 B.facing

C.to have faced　　　　　 D.being facing

19.A doctor can expect＿＿＿at any hour of the day or night.

A.calling　　　　　　　　 B.to call

C.being called　　　　　 D.to be called

18.When I caught him cheating me, I stopped ＿＿things in his shop.

A.buying　　 B.buy　　 C.to buy　　 D.bought

17.Sandy could do nothing but ＿＿＿to his mother that he was wrong.

A.admitting　　　 B.admits　　 C.admit　　 D.to admit

16.You will find the word “psychology” ＿＿＿＿under “P” in your dictionary.

A.have listed　　 B.list　　 C.listed　　 D.listing

15.In order not to be disturbed, I spent three hours＿＿in my study.

A.locking　　 B.locked　　 C.to lock　　 D.being locked

14.Does the way you thought of＿＿＿the water clean make any sense?

A.making　　　　　　　　 B.to make

C.how to make　　　　　 D.having made

13.Such＿＿＿the case, I couldn’t help but ＿＿＿＿＿ him.

A.being； support　　　　　　　 B.is； to support

C.has been； supporting　　　　 D.be； supported

12.I can hardly imagine Peter＿＿＿across the Atlantic Ocean in 15 days.

A.sail　　 B.to sail　　 C.sailing　　 D.to have sailed

11.O’Neal works hard.He is often seen ＿＿＿heavily before his teammates start.

A.sweated　 　　　　　　　　　　B.to be sweated

C.sweating　　　　　　　　　　 D.being sweated