摘要：( ) We must do something to stop people from . A. to throw litter about B. to throw litter into C. throwing litter about D. throwing litter into
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We must do something to stop people from ______.
[ ]
A. to throw litter about
B. to throw litter into
C. throwing litter about
D. throwing litter into
查看习题详情和答案>>
B. to throw litter into
C. throwing litter about
D. throwing litter into
We must do something to stop people from _____.
[ ]
A. to throw litter about
B. to throw litter into
C. throwing litter about
D. throwing litter into
查看习题详情和答案>>
B. to throw litter into
C. throwing litter about
D. throwing litter into