is difficult if you put your heart into it.A. AnythingB. NothingC. SomethingD. Everything

问题补充：

is difficult if you put your heart into it.

A. Anything

B. Nothing

C. Something

D. Everything

答案：

A. Anything

(答案→)B. Nothing

C. Something

D. Everything

解析：从句意来看，如果你全心投入进去，没有任何事情是困难的。只有B选项nothing——没有什么事，符合题意。