7.　　　 ____ this possible effect may put us in a dilemma.

A.　　 Having overlooked　　 B. Overlooked　　 C. To overlook　　 D. Overlooked

6.　　　 ----What do you suppose made her so unhappy?

---- ___ her wallet.

A.　　 lose　　 B. Lost　　 C. Losing　　 D. To lose

5.　　　 You can hardly imagine what great difficulty we had ___the work.

A.　　 to do　　　 B. done　　　 C. doing　　 D. do

4.　　　 ----The light in the office is still on.

----Oh, I forget ___.

A.　　 turning it off　　 B. to turn it off　　 C. turning off it　　 D. to turn off it

3.　　　 If you don’t go to the party, ___I.

A.　　 so do　　 B. so will　　 C. nor do　　 D. neither shall

2.　　　 Although I enjoy ___to music, I don’t know ___about it.

A.　　 listen; many　　 B. listening; much　　 C. listening; many　　 D. to listen; much

1.　　　 John plays football ____, if not better than, David.

A.　　 　as well　　　　 B. as well as　　　 C. so well　　　　 D. so well as