题目内容
It was five hours _____ the French climber reached the top of the world’s tallest building.
| A．since | B．that | C．before | D．when |
C
解析试题分析：句意：5小时后法国登山者才爬上世界上最高的建筑。这里使用了句型：It was+一段时间+before…的句型，意思是：过了…才/就…，since也可以和一段时间连用，但是句型是“It is/has been +一段时间+since…”，而这句话用的是一般过去式，所以选C。
考点：考查固定句型
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