Question

【题目】Mike is busy exchanging his idea with his workmate _______ the phone.

A.onB.inC.byD.of

Answer 1

【答案】A

【解析】

句意：Mike正忙着和他的同事在电话里交流他的想法。

考查介词辨析。on在……上面；in在……里面；by通过……方式；of……的。on the phone是一个固定短语，意为“在打电话”，故选A。