Exercise 9: Complete each gap with the correct form of the word in brackets.

1. The ___ Digestive _____ (1. DIGEST) system breaks down food into simple substances for the body cells to use. These substances are ________ (2. ABSORB) into the bloodstream and waste matter is passed out of the body as urine or faeces. Cells need oxygen to break down and release ________ (3. ENERGETIC) in food. The oxygen is taken into the body through the ________ (4. RESPIRATION) system-the nose, windpipe, or trachea, and two lungs. You take in oxygen from the air when you breathe in and release waste carbon dioxide when you breathe out.

2. Diet is one of the most important factors in maintaining good overall health. Eating a ________ (5. BALANCE) diet rich in fruits, vegetables, lean proteins, healthy fats, whole grains, nuts and legumes provides you with the nutrients required for optimal energy levels, a strong immune system and healthy internal organs. In addition, ________ (6. CONSUME) the right foods can help protect you from many of the most common chronic diseases, including heart disease, stroke and Type 2 diabetes, as well as ________ (7. OBESE), which is a major risk factor for disease.

3. Humor, smile and laughter can facilitate communication between employees and managers. They can create a ________work (8. FRIEND) environment where tasks are carried out effectively. Laughing at work combats stress and________ (9. PROMOTE) the relaxation of employees. The good mood and relaxation promoted by the laughter and good humor can increase efficiency and ________(10.PRODUCE). It must be stressed however that the jokes and other forms of humor should never offend anyone.