I have to work at least eight ours( )day A.another B.a C.the D.an

选B.I have to work at least eight ours( a )day.我每天至少得工作八小时.a这里表示“每”,可以换成"per".再如：I should take the medicine three times a/per day.我应该一天服三次药.请点击下面的“选为满意答案...