我可以随时避开他,因为我点下鼠标就可以把他拒之门外。

A. I could avoid him because one click of the mouse would shut him out of my room.
B. I could avoid him any time I wanted, because just one click of the mouse would shut him out of my room.
C. I could avoid him , because just one click of the mouse shut him out of my room.