1. When I was little I could climb the trees.
2. May I open the window?
3. We mustn't drop litter in the street.
4. My sister wanted to travel to the UK.
5. If you have a toothache, you should go to the dentist.
6. Pupils must do their homework.
7. Can you swim well?
Объяснение:
number 1,4- past simple
number 2,3,5,6,7,-present simple
good luck!
1. When I was little I could climb the trees.
2. May I open the window?
3. We mustn't drop litter in the street.
4. My sister wanted to go to the UK.
5. If you have a toothache, you should go to the dentist.
6. Pupils must do their homework.
7. Can you swim well?