—Whydon'tyoubuyacamera?—DoyouthinkIneedto？Myphoneisofte...

问题详情：

—Why don't you buy a camera?

—Do you think I need to？My phone is often used ______ a camera.

A．by  B．for  C．as

【回答】

C

知识点：介词和介词短语

题型：选择题