问题补充:
If you at school, you a college student now.
A. had studied hard; would have been
B. should have studied hard; should have been
C. had studied hard; would be
D. would study hard; must have been
答案:
A. had studied hard; would have been
B. should have studied hard; should have been
(答案→)C. had studied hard; would be
D. would study hard; must have been
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