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 1)1.She was surfing when the shark attacked her.2.He was dancing at a party when he met his girlfriend.3.I was having a picnic when i saw my sister4.When they saw the shark they were swiming in the sea.5.Susan arrived while i was having dinner.6.He was playing football when he broke his leg.7.I was waited for my friends when the bus arrived.8.When i got back my mum was cooking dinner.  2)did you dowent to a partydidenjoyed metwas talkingaskedlives does he knowgo to 11 не знаю, to see не употребляется в progressive are going to