【題目】They often take walk after dinner.

A. a B. ∕ C. the D. an

【答案】A

【解析】試題分析：句意：飯后他們經(jīng)常去散步。短語(yǔ)take a walk去散步，本句中walk用作可數(shù)名詞，表示一次散步，詞首音素是輔音，不定冠詞用a，故選A。

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