问题
选择题
If you are in trouble, you can _____help from the policeman.
A．look over
B．ask for
C．check
D．think about
答案
B
题目分析: 句意：如果你有困难，你可以求助于警察。 look over检查，ask for请求，check检查，think about考虑。根据If you are in trouble如果你有困难，可知是有困难找警察，故选B.