--- Hello! Is Mr. John in the office?
--- Yes. But I’m sorry. He is busy _________ and can’t speak to you.
A．a(chǎn)t onceB．a(chǎn)t presentC．a(chǎn)t the end D．a(chǎn)t first
B
詞義辨析。A立刻，馬上；B現(xiàn)在；C最后；D起初。句意：—你好，Mr John在辦公室嗎？—是的。但是對不起。他現(xiàn)在很忙，沒有時間和你說話。故B正確。
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