1.They______(plan)a day out at that time.2.Thank you for_____(invite)me______(join)in your trip.
3.How long did it take you____(finish)the work.
4.When I______(leave)home,my sister________(eat)breakfast.
5.You______(not have)sports on the playround at 3p.m.yesterday.
6.Don't make so much noise.The babies_______(sleep).
7.The Black family_______(watch)TV when I came in.
8.The twins________(read)in the library from 2.00 to 4.00 yesterday afternoon.
9.It_______(snow) heavily when Iarrived home yesterday evening.
10.My parent________(clean)the house at eight yesterday morning.
11._________the policemen_________(watch)the traffic or ______(have)a rest from 7.am.to 10.am?
12.They________(chat) when their teacher___(come)into the classroom.
13.It's necessary________(prevent) deserts from_____(get)bigger by ________(plant)more trees.