I think _______ our duty to keep our environment clean and tidy.[ ]A. thisB. thatC. it's D. one

题目简介

I think _______ our duty to keep our environment clean and tidy.[ ]A. thisB. thatC. it's D. one

题目详情

I think _______ our duty to keep our environment clean and tidy.

A. this
B. that
C. it's
D. one
题型:单选题难度:中档来源:福建省期中题

答案

C

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