Look at the trouble I’m in. If only I your advice.A. followedB. would followC. had follow

问题补充：

Look at the trouble I’m in. If only I your advice.

A. followed

B. would follow

C. had followed

D. should follow

答案：

A. followed

B. would follow

(答案→)C. had followed

D. should follow

解析：句意：看我现在的麻烦，要是我听你的建议就好了。If only后跟虚拟语气，根据语境，是对过去的虚拟，故用过去完成时，故选C。