Share Zero and First Conditionals
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If water freezes, it ...
had expanded.
expands.
expand.
When we recycle one ton of glass, we ............ 315 kilograms of carbon dioxide.
save
have saved
saved
If it rains, ........... an umbrella!
take
took
have taken
The Arctic Ocean becomes almost completely covered in ice when it ............ winter.
will
was
is
When Arctic ice caps and glaciers melt, sea levels ..........
rice
rose
rise
When we heat water to 100°C (212°F), it ..........
is boiling
was boiling
boils
You .......... money and .......... the environment if you carpool.
will save - help
help - save
safe - help
If you go through the Sahara desert by foot, it ........... you nearly 50 days to cross it.
took
take
will take
When you are cold, you .......... more warmly.
wear dresses
should dress
dressed
You .......... if you .......... enough water.
dehydrate - should drink
will dehydrate - don’t drink
dehydrated - drank
