【单选题】 ______ his address, I can't visit him personally.
- A. Not known
- B. Not knowing
- C. Haven't know
- D. Don't know
网考网参考答案：B
网考网解析：
因为不知道他的地址所以我不能亲自拜访他．本题考查现在分词作原因状语。现在分词knowing的否定形式直接在它前面加not，故选B。 查看试题解析出处>>
【单选题】 ______ his address, I can't visit him personally.
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