1. If we ______(plant) trees, we _____ (reduce) carbon dioxide in the atmosphere.
plant, will reduce
plant, reduce
will plant, reduce
1. If we ______(plant) trees, we _____ (reduce) carbon dioxide in the atmosphere.
plant, will reduce
plant, reduce
will plant, reduce
2. If we ______(learn) to respect the environment, our planet_____ (be) a better place to live in.
will learn, be
learn, be
learn, will be
3. If we _____(recycle) paper, we _____(save) our forests.
will recycle, save
recycle, will save
recycle, save
4. If we_____(not, buy) products from endangered species, we _____ (help) them survive.
not buy, will help
don't buy, will help
doesn't buy, will help
5. If we ____ (not, leave) taps running, we_____ (save) water.
don't leave, will save
not leave, will save
don't leave, save
6. If we _____(not, leave) all our lights on, we ______ (not, waste) energy.
don't leave, waste
don't leave, will waste
don't leave, won't waste
7. If we …….. save the forests of Sumatra, the Sumatran tiger won’t survive.
won’t
don’t
wouldn’t
didn’t
8. If you …….. less paper, you will save forests.
use
used
will use
would use
9. If we don’t protect rainforests now, many animals …….. become extinct.
won’t
will
don't
wouldn’t
10. If we stop using our cars, we …….. to end global warming.
helped
help
would help
will help
11. I won’t buy anything from that shop unless they …….. burning coal in their factory.
don’t stop
stop
stops
will stop
12. If Jack _____________ soon, we _______________ without him.
won't come; will leave
doesn't come; will leave
won't come; leave
don't; leave
13. Ted ________________ keep fit if he ________________ to join the school football team.
will have to; wants
has to; will want
will have to; will want
We _______________ swimming if it ________________ tomorrow.
won't go; will rain
won't go; rains
don't go; will rain
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