He an hour doing exercise in the gym every day.A. paysB. spendsC. takesD. costs

问题补充：

He an hour doing exercise in the gym every day.

A. pays

B. spends

C. takes

D. costs

答案：

A. pays

(答案→)B. spends

C. takes

D. costs

解析：通过ｄｏｉｎｇ我们知道，本题应该选Ｂ。ｓｐｅｎｄ的后面接ｄｏｉｎｇ结构。ｐａｙｆｏｒ，ｔａｋｅ其后一般应该ｔｏｄｏ；而ｃｏｓｔ的主语应该是物。所以本题选B。