题目内容
【题目】We were about to set off _____ Tom came to me.
A. while B. when
C. as D. since
【答案】B
【解析】
考查固定句式。句意：我们正要出发，这时汤姆来找我。be about to do sth.---when---，正要做某事，这时候---，故选B。
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题目内容
【题目】We were about to set off _____ Tom came to me.
A. while B. when
C. as D. since
【答案】B
【解析】
考查固定句式。句意：我们正要出发，这时汤姆来找我。be about to do sth.---when---，正要做某事，这时候---，故选B。