Grammar
C. Put the verbs in brackets into the correct infinitive or -ing form.
14 I've decided
(donate) money to an environmental charity.
15 I really enjoy
(volunteer) at the homeless shelter.
16 A strong underwater earthquake may
(cause) a tsunami.
17
(organise) a beach clean-up day on Saturday was Tom's idea.
18 It's a good idea to start
(recycle) all the plastic bottles in the school.
19 They are eager
(help out) with the environmental awareness campaign