He was afraid what he had done____ a disastrous effect on his career.
A. could be
B. can have
C. shall have
D. might have
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The car plunged into the river. The driver ______ get out but the passengers were drowned.
A. was able to
B. succeeded to
C. could
D. might
When he was at school. he ____ early and take a walk before breakfast .
A. would rise
B. should rise
C. shall rise
D. used to rising
I _____ the operation unless it is absolutely necessary.
A. rather would not have
B. would rather not have
C. would rather
D. would not rather had
I would go to visit them but l _____ think they are anxious to see me .
A. haven't
B. didn't
C. wouldn't
D. don't