【C3】
A．In
B．By
C．With
D．At
请帮忙给出正确答案和分析，谢谢！
【C3】A．inB．forC．ofD．at
A．inB．byC．atD．on
The snakes will attack only if you take it ______ surprise.A．inB．byC．withD．on
Be _____ guard against pickpockets.A: onB: byC: withD: of
【C14】A．ofB．byC．withD．against
【C7】A．inB．toC．withD．of
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