Your can~t imagine the trouble I had ___ his hous .A .to find B.found C.finding D.find选什么?

Your can~t imagine the trouble I had ___ his hous .A .to find B.found C.finding D.find选什么?
Your can~t imagine the trouble I had ___ his hous .A .to find B.found C.finding D.find
选什么?

Your can~t imagine the trouble I had ___ his hous .A .to find B.found C.finding D.find选什么?
c正确.trouble是后面定语从句的宾语,定语从句的意思是：我很难找到他的住处.——I had trouble finding his house.

字典上说：
Did you have much trouble in finding my house? 私の家を探すのに骨が折れましたか.