Question

Sorry, Mr Smith isn't in the office ________. Would you call him later?

1. A.
   at the moment
2. B.
   on the moment
3. C.
   for a moment
4. D.
   in a moment

Answer 1

A
题意：很抱歉，史密斯先生此刻不在办公室，你可以过会儿再打过来吗?at the moment目前；此刻，符合语境。