问题补充：
-I think ask Tim for some advice.
-. Last time when I turned to him, he refused to help.
A. youd rather; I think so
B. youd better; Id rather not
C. you have to; Id rather not
D. youd better; I think so
答案：
A. youd rather; I think so
(答案→)B. youd better; Id rather not
C. you have to; Id rather not
D. youd better; I think so
解析：句意：我认为你最好向蒂姆寻求一些建议。我不想去，上次，我找他帮忙时，他拒绝了。youd better do sth最好做某事，would rather do sth宁愿做某事，根据句意应该为不想去找他帮忙，故选B
