问题
选择题
I delayed _______ your letter because I had been away for a week.
A．answer
B．answering
C．writing
D．to post
答案
答案：B
搜题请搜索小程序“爱下问搜题”
I delayed _______ your letter because I had been away for a week.
A．answer
B．answering
C．writing
D．to post
答案：B