At school we have six classes ____day A.one B.all C.in a D.a 选哪个说一下理由 我觉得bcd都对

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At school we have six classes ____day A.one B.all C.in a D.a 选哪个说一下理由 我觉得bcd都对
At school we have six classes ____day A.one B.all C.in a D.a 选哪个说一下理由 我觉得bcd都对

At school we have six classes ____day A.one B.all C.in a D.a 选哪个说一下理由 我觉得bcd都对
D
a day= each day

D 语感

选D

C. in a

D
six classes a day一天六节课

D.a。six classes ____day ,这表示每天六节课。

all后面加复数
in a 对
a 应加介词