问题 选择题

That was because the school bus was _________ by a thick fog.

A.broke off

B.held up

C.kept up

D.turned off

答案

B

题目分析:句意:那都是因为由于大雾校车被延误了。A. break off打断,终止C. keep up保持D. turn off 关掉电源等B. hold up 延误,阻挡,根据句意和动词短语的意思判断B最佳。

考点:考查动词短语的用法。

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