Question

--- Hello! Is Mr. John in the office?
--- Yes. But I’m sorry. He is busy _________ and can’t speak to you.

A．at once

B．at present

C．at the end

D．at first

Answer 1

B

詞義辨析。A立刻，馬上；B現在；C最后；D起初。句意：—你好，Mr John在辦公室嗎？—是的。但是對不起。他現在很忙，沒有時間和你說話。故B正確。