I wish I（ ）how to repair this tape-recorder. If I did, I（ ）to turn to him for help.
A、
know, wouldn't have
B、
knew, would have
C、
knew, wouldn't have
D、
know, would have
【正确答案】：C
【题目解析】：
本题考查虚拟语气的使用。
此处两句均为虚拟语气，前句是wish引导的宾语从句，从句谓语需使用一般过去时，排除AD两项；分析后句语境，应为“如果我知道怎么修，我就不会求助于他了”，应为否定语气，故选C。
句意：我要是知道怎么修理这台录音机就好了。如果我知道怎么修，我就不用求助于他了。
