---- Could I have a word with you?
---- Sorry, I am busy . Shall we do it later?
A. at the moment
B. for a moment
C. on the moment
D. in a moment
网友回答
(答案→)A. at the moment
B. for a moment
C. on the moment
D. in a moment
解析：
本题考查表示时间的介词短语, at the moment意思是:当时; for a moment意思是:一会;on the moment和in a moment意思是: 立刻,马上。