We will save our Earth unless we recycle (?, ? and ?) in the recycling bins.
plastic things, cans and paper (Any reasonable answer)
We will waste our water unless we (???).
Simple Present Tense (Any reasonable answer)
Land pollution will be caused (???) we reduce the waste.
unless
(???) unless we love our Earth.
Simple Future Tense ..... (Any reasonable answer)
Sophie's mother will be happy unless Sophie (???).
Simple Present Tense (Any reasonable answer)
There will be more rubbish (?) you do not clean up the beach after the party.
if