问题
选择题
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
答案
答案：A
搜题请搜索小程序“爱下问搜题”
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
答案：A