问题
选择题
--- Where are you, Nancy?
--- Here in the sitting room, _______ to Professor Smith．
A．is writing
B．write
C．to write
D．writing
答案
答案：D
搜题请搜索小程序“爱下问搜题”
--- Where are you, Nancy?
--- Here in the sitting room, _______ to Professor Smith．
A．is writing
B．write
C．to write
D．writing
答案：D