Question

【题目】Forty percent of the class _______ most of the work, and some of the work ______ really difficult.

A. are doing, is B. are doing, are

C. is doing, is D. is doing, are

Answer 1

【答案】A

【解析】

试题分析：句意：40%的同学正在做大多数工作，一些工作确实很难。根据句意及题干分析第一空40%的同学是复数，所以谓语动词要用复数；第二空一些工作（work）是不可数名词，所以谓语动词要用单数，故选A。