Question

【题目】Half of the boys __________ finished the homework as some exercises __________ really difficult .

A. haven’t , is B. hasn’t , are

C. hasn’t , is D. haven’t , are

Answer 1

【答案】D

【解析】

试题分析：句意：由于一些练习真的很难，一半的学生没有完成作业。half of the boys一半的学生，作主语视作复数形式。故答案为D。