Match the halves to make phrases:

Uncountable nouns have no plural form

Give a synonym to a phrase:

look after guests

People who cycle to work help to ...... in cities

The sun and the sea are ...... of energy that will always be present

We form the first conditional with 

Give a synonym to a phrase : enjoy an activity

Match information with details

A product or resource is ....... when it is made into a new product

........ are natural sources of energy like gas that are underground