问题补充：
— Can you stay here and help me ?
— Sorry, I have a meeting to attend .
A. at the moment; for a moment
B. for the moment; in a moment
C. at that moment; in a moment
D. for the moment; for the moment
答案：
A. at the moment; for a moment
(答案→)B. for the moment; in a moment
C. at that moment; in a moment
D. for the moment; for the moment
解析：词语辨析题。at the moment目前、现在; for a moment一会儿；for the moment暂时; in a moment 马上句意：“你能暂时留这帮我吗？”“抱歉，一会儿我有一个会议要参加”根据语境选B
