题目内容

林火预报

查看答案

搜索结果不匹配？点我反馈

更多问题

“黑色防火”

“绿色防火”

I had been looking for the book for two days ______I found it at last.

A. until
B. when
C. before
D. while

He criticized the students ________they did anything wrong.

A. However
B. whenever
C. whatever
D. whichever