It was nearly an hour ____the sleeping pill ______effect. A.

It was nearly an hour ____the sleeping pill ______effect.
A.when; took B.before; took C.since; had D.before ; had
瞬间的美 1年前 已收到1个回答 举报

隐型de风 春芽

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B

It was+一段时间+before…表示“过了….才…”take effect 表示(药等)见效;(法规等)生效

1年前

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