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1he saved the ptofessor two days ago! did he save the professor two days ago
yes he did
2 yesterday she asked for help!Did she ask for help?
She didn t 
3 Yesterday we were walking in a  park!Did we walk in the park?
We didn t 
4 Last summer you were going to the country(You wanted go to the country)
did you want to go ccountry? Were you going to the country?
Yes I did !
5yesterday they were looking for you
Did they look for you?
no they didn t