题目内容：

My sister was afraid _______ out at night,because she was afraid______ dogs.
A.of going ; to B.to go;of
C.going;of D.to go;to

优质解答

常用词组阿be(is.am.are)afraid to do sth.
所以第一个空填was afraid to out at night.这里out at night就是sth
第二个空be afraid of sth