He usually ______20 hours every day.
A.relaxB.eatC.relaxesD.sleep
C
通過(guò)時(shí)間狀語(yǔ)可知本句為一般現(xiàn)在時(shí)態(tài),主語(yǔ)為第三人稱單數(shù),后面動(dòng)詞要加s。relax后腰夾es,所以選C。
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