题目内容
一What do you usually do when you see others ________?
一I usually stop them and ________.
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
B. littering; pick up it
C. litter; pick it
D. littering; pick it up
D
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