People are really when they listen to music .A. relaxedB. relaxing C. relaxD. to relax

问题补充：

People are really when they listen to music .

A. relaxed

B. relaxing

C. relax

D. to relax

答案：

(答案→)A. relaxed

B. relaxing

C. relax

D. to relax

解析：本题主要考查的是，relax 的用法，be relaxed的主语为人，be relaxing的主语为物，根据题目中有be 动词，故选A