Standing under a big tree to（）getting wet in a rain is not a good choice. This is especially true when it is the thunderstorm reason.

A.That's right 
B.You're welcome
C.It doesn't matter 
D.All right

A.Not at all
B.Don 't say so
C.I don't think so 
D.It doesn't matter

A.frightening 
B.frightened   
C.to be frightening
D.to be frightened