Complete the sentence:

The quantity of electricity or gas that you use is your .....

....... are produced from the burning of coal, oil or wood

What does it mean: to reserve a place for an event?

You ...... products that you don't want any more

If we ...... the bus system, the start-up costs ...... much lower

Countable nouns don't have plural form

Match two halves to make phrases

An ........ product or action helps to protect the environment

We use the first conditional to describe the probable future result of a present or future action

Give a synonym to a phrase:

organize a journey to a place and back