Trees are good for human being. We can’t plant them many.A. soB. suchC. tooD. enough

问题补充：

Trees are good for human being. We can’t plant them many.

A. so

B. such

C. too

D. enough

答案：

A. so

B. such

(答案→)C. too

D. enough

解析：副词辨析。Such不能修饰many，enough修饰副词时，放在副词之后，所以排除B,D；so many如此多；too many太多，句意：树木对人类有好处。我们种植多少都不过分。句子要表达肯定意义，所以选C。