Everyone needs at least eight sleep a night. ——I agree. A. hourB. hoursC. hour’s D. hours

问题补充：

Everyone needs at least eight sleep a night.

——I agree.

A. hour

B. hours

C. hour’s

D. hours’

答案：

A. hour

B. hours

C. hour’s

(答案→)D. hours’

解析：句意：每个人晚上至少需要八个小时的睡眠。我同意你的观点。名词所有格表示时间。Eight hours八小时，结尾已经有s,直接加’。