were invented 考点为被动语态对吗?If thalidomide _________(invent) today,it would never be released for human use because new tests on pregnant animals would reveal the dangers.

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were invented 考点为被动语态对吗?If thalidomide _________(invent) today,it would never be released for human use because new tests on pregnant animals would reveal the dangers.

were invented 考点为被动语态对吗?If thalidomide _________(invent) today,it would never be released for human use because new tests on pregnant animals would reveal the dangers.
were invented 考点为被动语态对吗?
If thalidomide _________(invent) today,it would never be released for human use because new tests on pregnant animals would reveal the dangers.

were invented 考点为被动语态对吗?If thalidomide _________(invent) today,it would never be released for human use because new tests on pregnant animals would reveal the dangers.
were invented
虚拟语气 用were 代替was