Waste paper shouldn't _____ everywhere. It's our duty to keep our city clean.[ ]A. be thro

题目简介

Waste paper shouldn't _____ everywhere. It's our duty to keep our city clean.[ ]A. be thro

题目详情

Waste paper shouldn't _____ everywhere. It's our duty to keep our city clean.
[     ]
A. be thrown        
B. Throw      
C. is thrown            
D. are thrown
题型:单选题难度:中档来源:同步题

答案

A

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