Question

【题目】Some students were talking loudly ____the head teacher came into the classroom.

A. while B. as soon as C. when D. as long as

Answer 1

【答案】C

【解析】句意：当校长进入教室的时候，一些学生正在大声地谈论着。A. while当……时候；后引导的从句的动词用进行时； B. as soon as一……就； C. when当……时候； D. as long as只要。故选C。