问题详情:
You won't work out the problem ______ you understand it. So listen to me explain now.
A. since B. when C. unless D. though
【回答】
C
知识点:连词
题型:选择题
问题详情:
You won't work out the problem ______ you understand it. So listen to me explain now.
A. since B. when C. unless D. though
【回答】
C
知识点:连词
题型:选择题