Iwasabouttoleave
问题详情:
I was about to leave_________ there was a knock on the door.
A. while B. when C. as D. before
【回答】
B
知识点:连词
题型:选择题
问题详情:
I was about to leave_________ there was a knock on the door.
A. while B. when C. as D. before
【回答】
B
知识点:连词
题型:选择题