题干

—Do fish sleep? I think they’re swimming around_________.
—Of course they sleep. But they sleep with their eyes open.
A.all the sameB.at the same time
C.at that timeD.all the time
上一题 下一题 0.4难度 单选题 更新时间:2019-06-02 10:04:02

答案(点此获取答案解析)