问题详情:
When we came in, they___their lessons.
A. are not doing B. weren't doingC. not were doing D. have done
【回答】
B
知识点:动词时态
题型:选择题
问题详情:
When we came in, they___their lessons.
A. are not doing B. weren't doingC. not were doing D. have done
【回答】
B
知识点:动词时态
题型:选择题