Choose the best answer to complete the sentence.A hydropower station ______________ in the North of the country next year.

was built

were built

has been built

will be built

Choose the best answer to complete the sentence. Remember to ____________ the lights before going to bed.

turn off

stop

turn on

turn

Choose the best answer to complete the sentence.Fossil fuels are very common in our society but they ____________ the environment.

pollute

waste

provide

renew

Choose the best answer to complete the sentence.Fossil fuels are very common in our society but they ____________ the environment.

pollute
waste
provide
renew