问题详情:
单项选择。
It's bad to throw about paper everywhere. We must avoid ________ that.
A. do B. doing C. did D. to do
【回答】
B
知识点:动词和动词短语
题型:选择题
问题详情:
单项选择。
It's bad to throw about paper everywhere. We must avoid ________ that.
A. do B. doing C. did D. to do
【回答】
B
知识点:动词和动词短语
题型:选择题