问题补充：
He is a new comer. There is no one , so let’s go and help him, shall we?
A. who to turn to
B. for him to turn
C. for whom to turn
D. he can turn to
答案：
A. who to turn to
B. for him to turn
C. for whom to turn
(答案→)D. he can turn to
解析：考查固定搭配。句意“他是新来的。他没有认识的人可以求助，所以让我们去帮他，好吗？”turn to sb. for help“向某人求助”。 no one是先行词，作宾语的that/whom可省略，B、C缺少介词to；A项缺少主语；D项正确。故选D。
