плиз помогите на завтра даю 70 баллов

1.
A:I want to organize a clean-up day.
B:Can i join you?
2.
A:I'd love helping poor people in other countries.
B:You could donating money to a charity.
3.
A:We should all do somesing protect the environment.
B:Yes,people need to stop cutting down so many trees.
4.
A:What can i do reducing air pollution?
B:You could try walking instead of driving to school.