Question

【题目】It's bad to throw about paper everywhere. We must avoid ________ that.

A. do B. doing C. did D. to do

Answer 1

【答案】B

【解析】

句意：到处扔纸片是不对的，我们必须避免这样的行为。avoid doing sth.避免做某事，固定搭配。句中最后的that代指前边说的to throw about paper everywhere。故答案为B。