23．( )一What do you usually do when you see others ? 一I usually stop them and ． A．litter,pick it up B．littering,pick up it C．litter,pick it D．littering,pick it up 【查看更多】
题目列表(包括答案和解析)
一What do you usually do when you see others ________? 一I usually stop them and ________.
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A. litter; pick it up B. littering; pick up it C. litter; pick it D. littering; pick it up
