The little girl recovered her strength when the drug().
A. came into effect
B. took effect
C. changed effect
D. put into effect
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()his surprise,he got an offer of postgraduate study from Beijing University.
A. In
B. To
C. For
D. With
The boss required us to()a recent photo to the application form via emails.
A. attach
B. bring
C. take
D. print
Bill Gates is often thought to be the richest man in the world.(), his personal life seems not luxury.
A. Moreover
B. Therefore
C. However
D. Besides
Mr. Lin()to New York before, so the host family went to the airport to pick him up.
A. didn't go
B. hasn't been
C. doesn't go
D. hadn't been