Question

2. 一 What are you doing?

一 I a letter to my pen pal.

   A. write        B. writes

   C. am writing   D. are writing

Answer 1

2. C

2. C  考查动词的时态。主语是“I”，be动词要用“am”， 答语时态要与问句一致，故用现在进行时。