Li Ming is in poor health. He should pay more attention exercise.A. to takeB. to takingC.

问题补充：

Li Ming is in poor health. He should pay more attention exercise.

A. to take

B. to taking

C. for taking

D. in taking

答案：

A. to take

(答案→)B. to taking

C. for taking

D. in taking

解析：句意：李明的体质较差。他应该多注意体育锻炼。Pay attention to sth / doing sth 注意某事/ 做某事，to 为介词，其后接名词，代词，名词性词组，或者动名词短语。故选C。