раскрыть скобки. Нужно оставить глагол в нужное время глаголов.
1. I (spot) this mistake until after I (pay) for the tickets.
2. She (was/had been) happy because Mark (phoned/had phoned) her.
3. Nobody (came/had come) to the party because Jerry(forgot/had forgotten) to send the invitaiton cards.
4. When the nurse(appear), the baby(cry) for half an hour.