问题
选择题
My friend warned me ______ going to the East Coast because it was crowded with tourists.
A．by
B．against
C．on
D．for
答案
答案：B
本题考查介词的用法。warn sb. against doing 警告某人不要做某事。故选B。
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My friend warned me ______ going to the East Coast because it was crowded with tourists.
A．by
B．against
C．on
D．for
答案：B
本题考查介词的用法。warn sb. against doing 警告某人不要做某事。故选B。