.They went to London ______ just over five months.A.for B.since C.before D.when

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.They went to London ______ just over five months.A.for B.since C.before D.when

.They went to London ______ just over five months.A.for B.since C.before D.when
.They went to London ______ just over five months.
A.for B.since C.before D.when

.They went to London ______ just over five months.A.for B.since C.before D.when
C
句子的意思是他们去伦敦已经五个月了.
解析:A 用for的话 后边是一个时间段,前应该是用完成时,如
They had been in London ...
B since 后接时间点
D when 与句意不符

A 因为for接时间段 since接时间点 before是过去完成时的标志 而when是定语从句的用法 后接句子