Fill in each gap with ONE word. Use the words you have learnt in this unit.
1. We need to (1) _____________ down on fast food if we don't want to (2) _____________ from heart diseases in the future.
2. (3) _____________ out regularly and having a _____________ diet are the key to a healthy lifestyle.
3. Antibiotics are not used in the (5) _____________ of diseases caused by viruses.
1: cut
2: suffer
3: work
4: balanced
5: treatment