问题
选择题
—What are you doing?
—I ____ a letter to my pen pal. [ ]
A. write
B. am writing
C. writes
D. am write
答案
答案：B
搜题请搜索小程序“爱下问搜题”
—What are you doing?
—I ____ a letter to my pen pal. [ ]
A. write
B. am writing
C. writes
D. am write
答案：B