问题

The students usually need ________ sleep a night.

A:eight hours
B:eight-hours
C:eight-hour
D:eight hour;

正确答案是：

同类题型

Do you know where David is I couldn’t find him anywhere.—Well, he ______ have gone far—his coat’s still here.

________ he can work abroad next year will depend on his parents’ will

He always did well at school _____ having to do part-time jobs every weekends[ ]

He always gives me useful advice when I don’t know next .

She is a talented musician ________ being a photographer