It was nearly an hour ____the sleeping pill ______effect.A.when; tookB.before; tookC.since; hadD.be

题目简介

It was nearly an hour ____the sleeping pill ______effect.A.when; tookB.before; tookC.since; hadD.be

题目详情

It was nearly an hour ____the sleeping pill ______effect.
A.when; tookB.before; tookC.since; hadD.before ; had
题型:单选题难度:偏易来源:不详

答案

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

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