1.I was watching TV...
2.Mary and I were preparing
3.You studied hard last night.
4.At last time last year we were lying on the beach,
5.My dog was barking at MR Smith when we met.
6.When I was walking down the street I meet my teacher .
7.The boy was playing basketball all day long.
8.My mum was washing up while I clean the floor.
9.John studied English and German alltogether
10.Tom and Marz were skating when we met them.
11.It was raining whem we went out.
12.She wa doing shopping when she lost her wallet.
13.The little boz broke his leg while he was plazing soccer.