If I your advice then, I think that the crops could be growing better.
A. took
B. would have taken
C. had taken
D. have taken
网友回答
A. took
B. would have taken
(答案→)C. had taken
D. have taken
解析：答案：C 考查虚拟语气。句意为：要是当时我听了你的建议，现在庄稼可能长得更好。由“then”可知，此处是对过去事实的虚拟，所以if引导的条件句要用“had＋过去分词”形式。故答案选C。