题目内容
Catching _____ sight of their head teacher coming, the students fell into silence all of _____ sudden.
A. the; the B. /; a C. the; a D. /; /
B
【解析】
试题分析:考查冠词和固定搭配。此题可以使用排除法来做。catch sight of sth看见某物,是固定搭配,排除A、C;all of a sudden突然,相当于suddenly,是固定搭配,排除D,故选B。
考点:考查冠词和固定搭配
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