问题描述：
填空：Father__________still____________(sleep）when I_____(get)
2:grandma___________(cook)brerkfast while I__________(wash)my face this morning
3:mother________(sweep)the floor when I_______________(leave)home
4:The students________________(have) a biology class when the visitors_________(come)
5:The driver____________(drive)home when it_____________(rain)last night.
6:Some students from Class Four____(play)basketball when I______(see)them on the playground
7:Doctor Liu was on duty last night.He_________still_______(talk)with his patients in the hospital at 10 p.m
8:The street seller_________(sell)clothes,when he_________(find)a purse on the ground.
9:Mr Wang spends a lot of time writing his novel every day.He______still________(work)at midnight last night.
10：I___________read a history book when someone__________(knock)at the door
11:Masha__________(cook)when the doorbell_______(ring)
2:grandma___________(cook)brerkfast while I__________(wash)my face this morning
3:mother________(sweep)the floor when I_______________(leave)home
4:The students________________(have) a biology class when the visitors_________(come)
5:The driver____________(drive)home when it_____________(rain)last night.
6:Some students from Class Four____(play)basketball when I______(see)them on the playground
7:Doctor Liu was on duty last night.He_________still_______(talk)with his patients in the hospital at 10 p.m
8:The street seller_________(sell)clothes,when he_________(find)a purse on the ground.
9:Mr Wang spends a lot of time writing his novel every day.He______still________(work)at midnight last night.
10：I___________read a history book when someone__________(knock)at the door
11:Masha__________(cook)when the doorbell_______(ring)
问题解答：
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