Ex.4
0. missed
1. didn't check
2. didn't realise
3. did
4. turn
5. turned
6. crossed
7. walked
8. Did you watch
9. didn't watch
10. helped
11. played
Ex.5
1. rode
2. met
3. didn't have
4. found
5. took
6. went
7. saw
8. was
9. had
10. walked
