It was twelve o'clock they finished the work. A. since B. which C. that D. when 答案:D 指——青夏教育精英家教网—

摘要： It was twelve o'clock they finished the work. A. since B. which C. that D. when 答案:D 指导:此题易受强调句型思维定势影响而选C将其还原.则变成They finished the work twelve o'clock．显然twelveo'clock前省了介词at．因此可判定该题后面部分为定语从句.关系副词when在从句中作状语.it指代时间.不属于强调句型中的it.

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It was twelve o'clock __________they finished the work.

[ ]

A. since
B. which
C. that
D. when

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It was twelve o’clock ______they finished the work.

A. since B. which C. that D. when

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It was twelve o'clock __________they finished the work.

[　　]

A．since

B．which