(2013·西安模拟)The man we followed suddenly stopped and looked as if
whether he was going in the right direction.
A. seeingB. having seen
C. to seeD. to have seen
Not until I completed the form that half questions were not relevant to me.
A. had I realizedB. I had realized
C. I realizedD. did I realize
about this computer program, a huge amount of time and energy .
A. Should I know; be saved
B. If I had known; can be saved
C. Had I known; would have been saved
D. Did I know; was saved
Hearing the bell ringing, out .
A. rushing the childrenB. rushed the children
C. were rushing the childrenD. the children rushed
—Can I smoke here?
—No, at no time in the library.
A. permits smoking
B. does smoking permit
C. smoking is permitted
D. is smoking permitted
(2013·安庆模拟)So far, what we have done is destroying the earth; only by changing we live we save it.
A. that; willB. how; can
C. what; doD. which; shall
