Question

【题目】The Smiths were having dinner________the earth began to shake.

A. while B. when

C. as soon as D. Since

Answer 1

【答案】B

【解析】

句意：史密斯一家正在吃晚饭，这时大地开始摇晃起来。A. while正当……的时候；B. when此时；C. as soon as一……就；D. Since自从。when有“正在这个时候”的意思，表示当某一个动作正在发生时，突然发生了另一件事，故答案B符合题意。