I'm busy today.I have a very imporI'm busy today.I have a very important report ____.Ato listenBto listen toClisteningDto listening to

问题描述:

I'm busy today.I have a very impor
I'm busy today.I have a very important report ____.
Ato listen
Bto listen to
Clistening
Dto listening to

B,表目的,最后省略了the report