单项选择题

If only the patient ______ a different treatment instead of using the antibiotics, he might still be alive now.

A. had received
B. received
C. should receive
D. were receiving
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单项选择题
There are as good fish in the sea ______ ever came out of it.
A. than
B. like
C. as
D. so
单项选择题
She ______ filly or so when I first met her at the conference.
A. must be
B. had been
C. could be
D. must have been
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