1) was walking/ saw
2)saw/went
3)was reading/ rang
4)received/ was staying
5)was looking/ noticed / was standing
6)locked/ got, went
7)gave , said
8)digged / hid
9)ware eating/ came
10)was / grew
11)met/ was doing
12)did he break his leg while he was playing football?
13)dropped/ was carrying
14)met/ was working
15)lost/ were traveling
16)was writing/ was trying
17)was/ called
18)came / was rising
19)he stole ( had stolen) / caught
20)
What were you doing all the time I was working in the garden ?