He usually 20 hours every day.A. relaxB. eatC. relaxesD. sleep

问题补充：

He usually 20 hours every day.

A. relax

B. eat

C. relaxes

D. sleep

答案：

A. relax

B. eat

(答案→)C. relaxes

D. sleep

解析： 通过时间状语可知本句为一般现在时态，主语为第三人称单数，后面动词要加s。relax后腰夹es，所以选C。