put the verbs in brackets into the infinitive or the ing

Put the verbs in brackets into the infinitive or the ing form
1 I would like ........ (donate) some money to charity
2 we cleaned up the beach yesterday, so theres no point in........... (go) back tomorrow
3 you should (watch) that new documentary, its really interesting
4,(volunteer) to plant trees is a good way of protecting the environment.
5 i called them (say) that i was walking to school instead of driving