нужно задать вопрос. срочно 25 баллов
1) Sally is using a ladder to collect rubbish.

2) Dave and Sally are planting flowers.

3) He has been planting flowers for two hours.

4) Dave has joined the Eco-helpers club.

5) Dave joined the Eco-helpers club.

6) Sally collects rubbish in the park every Saturday.

7) We don't help them.

8) They will have to leave the city.

9) That's not interesting.

10) I can join the Eco-helpers club.

11) We really need volunteers.

12) I'll join the Eco-helpers club.