—Hello! Is Mr John in the office? —Yes. But I’m sorry, he is busy______and can’t speak to you.

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问题 —Hello! Is Mr John in the office? —Yes. But I’m sorry, he is busy______and can’t speak to you.

选项 A、at once
B、at present
C、at the end
D、at first

答案B

解析 本题考查介词短语辨析。句意:一您好!约翰先生在办公室吗?一他在。但是很抱歉,他现在正忙着,不方便接电话。A项意为“立刻,马上”;B项意为“现在,此刻”;C项意为“在最后”;D项意为“起初”。选项中只有B项符合句意。所以答案为B。
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