the doctor __(operate) on him from 2 to 4 yesterday afternoon.是填“_英语解答

the doctor __(operate) on him from 2 to 4 yesterday afternoon.
是填“has operated”还是“had operated”?

人气：333 ℃　时间：2020-05-08 01:33:08

解答

was operating
过去进行时态2点--4点
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