题目内容：

I used to be afraid ______ big dogs.Now I'm still afraid ______ big dogs.
A of;；to see B to ;；of seeing C.of seeing；to D.to；of

优质解答

I used to be afraid （of） big dogs.Now I'm still afraid （to see） big dogs.
过去我很怕见到大狗.现在我还怕.
be afraid of + 名词,害怕某人或某物.be afraid to do,害怕做.
所以选择A项正确.