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题型：单选题题类：常考题难易度：普通

He can walk________ two legs.

A、in B、on C、at

举一反三

Please call Mary _______ 354—6403.

Shen Xue and Zhao Hongbo won the gold medal for China ,so we're proud ___ them.

—What time do you eat dinner?

— seven the evening.

My opinions are a little different hers.

Look! My camera is different ______ yours.

Dad is adding some chocolate powder the milk.

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