21.When she(arrive), I (do) my homework 22.When Ba (phone), she (sleep) 23.When I (meet) her, she (hurry) to the station 24.Thet still (sleep)well when their father(come) back home from work 25.Tom(paint) his house when we (come) 26.Hoa (wash) her clothes when they(arrive) 27.What you ( do) when they( come)? 28.What she (do when you (meet )her? 29.What they (do) when it (rain)? 30.When he( arrive)what she(do)?

21.When she arrived, I was doing my homework

22.When Ba phoned, she was sleeping

23.When I met her, she was hurrying to the station

24.Thet still sleeping well when their father came back home from work

25.Tom was painting his house when we came

26.Hoa was washing her clothes when they arrived

27.What was you doing when they came

28.What was she doing when you met her?

29.What were they doing when it rained?

30.When he arrived what was she doing?

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