Odpowiedź:
Ex. 1
1.tripped over
2.ran out
3.slipped
4.lenient
5. steep
Ex. 2
1-a
2-b
3-d
4-e
5-c
Ex. 3
1. hadn't brought
2. have bought
3. had been playing
4. have you been doing
5. has sold
6. will be flying
7. have lost
*if I made any mistakes please don't mind correcting me*