Look at the trouble I am in. If only I your advice then.
A. followed
B. would follow
C. had followed
D. should follow
网友回答
A. followed
B. would follow
(答案→)C. had followed
D. should follow
解析：考查虚拟语气。If only要是。。。就好了，后面用虚拟语气。根据then可知指的是过去的情况，要用过去完成时。选C。