91.You have no idea ___ for her safety.

　　 A. how anxious I have been　　 B. so anxious I have been

　　 C. how I have been anxious　　 D. I have been so anxious

90.____to do the work, he went to bed.

　　 A. Not deciding　　 B. Deciding not　　 C. Not decided　 D. Decided not

89.The man we followed suddenly stopped and looked as if _____Whether he was going

in the right direction.

　　 A. seeing　　　 B. having seen　　　 C. to have seen　　 D. to see

88.-----You should have thanked her before you left.

　 ----I meant____, but when I was leaving, I couldn’t find her anywhere.

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

87.The teacher advised______ more books and ______more exercises.

　　 A. to read; to do　　 B. reading; doing　　 C. to read; doing　　 D. reading; to do

86.Though____to stop, the____ speaker kept on_____ at the meeting.

　　 A. told; excited; to talk　　　　 B. being told; exciting; talking

　　 C. told; excited; talking　　　　 D. to be told; exciting ;talking

85.The teacher, with an ___smile on his face, _____his student______ hard.

　　 A. encouraged; encouraging; to work　　 B. encouraged;. encouraged;　 to work

C. encouraging; encouraged;　 to work　　 D. encouraging; encouraging ;to work

84.I prefer to stay home____ shopping with you.

　 A. to go　　 B. rather than go　 C. to going　 D. rather than going

83.Why not try____ the back window if they can’t hear you on the door?

　 A. to knock at　　　 B. to knock on　　　 C. knocking down　　 D. knocking on

82.It is silly____ him_____ pretend____ everything.

　 A. for; to; knowing　 B. of; to; to know　　 C. for; to; to know　　 D. of ;to knowing