D 1.
1) have you been doing
2. have dusted
3) swept
4)am cooking
D 2
1)have you washed
2) washed
D3
1)did you go
2) had finished
D4
1) So how did you lose. ..
2)broke in
3) had stolen
4) was having
D5
1). did you live
2) had lived
D6
1) have you been working
2) finished