题目

Three students in ten will go and _____ to stay in the classroom. A. the rest areB. the rest is    C. the other areD. the other is   答案：Arest 可以代替可数名词也可以代替不可数名词，谓语用单数还是用复数就看它代替的是什么名词了。6. The teacher asked me to so that everybody could hear me clearly.   A. use up   B. give up   C. speak up   D. stay up