Heseldomstaysuplateatnight,
问题详情:
He seldom stays up late at night, _______ he has too much work to do.
A. if B. unless C. until D. while
【回答】
B
知识点:连词
题型:选择题
问题详情:
He seldom stays up late at night, _______ he has too much work to do.
A. if B. unless C. until D. while
【回答】
B
知识点:连词
题型:选择题