These measures are aimed _____ A/H1N1 from spreading.

A. to stop
B. to stopping
C. at stopping
D. in stopping
C
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科目:高中英語 來源:月考題 題型:單選題

These measures are aimed _____ A/H1N1 from spreading.
[     ]
A. to stop
B. to stopping
C. at stopping
D. in stopping

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