Many wild animals used to inhabit this area _______ the new factory was built.
before
while
as soon as
after
The river water will still be polluted _______ we find solutions to prevent dumping raw sewage.
because
until
after
so
Don’t leave the water running _______ you’re washing the dishes!
as soon as
while
because
since
Mass killings of fish can happen _______ there are sudden changes in water temperature.
while
when
before
till
_______ they realise the impact of deforesation, they’ll continue to cut down trees to provide more room for planting crops.
As soon as
After
Until
While
We picked up all the rubbish at the campsite _______ we returned home.
while
after
before
till
Can you help me sort out the rubbish _______ I’m cleaning the kitchen?
while
although
if
until
Grace lost her mobile phone signal _______ she went deep into the forest.
but
before
if
as soon as
The panda will stay at the zoo ________ it’s strong enough to return to its natural habitat.
after
since
as soon as
until