Put the verbs in brackets into the past perfect or the past perfect continuous. 16. A: Mum was really angry at me. B: I know. She.................................... (clean) the house all morning when you stepped in with those ...

Put the verbs in brackets into the past perfect or the past perfect continuous. 16. A: Mum was really angry at me. B: I know. She.................................... (clean) the house all morning when you stepped in with those muddy shoes. 17 A: Did Salty help you with the dinner party last night? B: No, we............................................ (prepare) everything by the time she got home. 18 A: Why was Tracy so happy to see her uncle? B: She........................................... (not/see) him for eight months. 19 A: Was Jenny upset that I called her so late? B: No, she.................................... (not/go) to bed yet. 20 A: Lisa was exhausted yesterday. B: I know. She...................................... (study) for a history exam all day.