迅速!英语被动句式的转换!比如It was founded in 1990.它的疑问句式是:When did it be founded?还是When was it founded?快点啊,谢谢了!

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迅速!英语被动句式的转换!比如It was founded in 1990.它的疑问句式是:When did it be founded?还是When was it founded?快点啊,谢谢了!
迅速!英语被动句式的转换!
比如
It was founded in 1990.
它的疑问句式是:
When did it be founded?
还是
When was it founded?
快点啊,谢谢了!

迅速!英语被动句式的转换!比如It was founded in 1990.它的疑问句式是:When did it be founded?还是When was it founded?快点啊,谢谢了!
When was it founded?

When was it founded?

When was it found?