题目内容
It was nearly an hour _____ the sleeping pill _____ effect.
[ ]
A.when; took B.before; took
C.when; had D.before; had
答案:B
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题目内容
It was nearly an hour _____ the sleeping pill _____ effect.
[ ]
A.when; took B.before; took
C.when; had D.before; had