He was doing much phsical exercise to build up his.A. abilityB. bodyC. strengthD. mind

问题补充：

He was doing much phsical exercise to build up his.

A. ability

B. body

C. strength

D. mind

答案：

A. ability

B. body

(答案→)C. strength

D. mind

解析：考查名词近义词辨析。Ability指做好某事的能力，可以学到的；body太直接，中国式英语；strength指事物固有的有待于加以利用的力量；mind指头脑、智力、精神。句意为假期身体锻炼的目的是提高自己的身体素质。