Ai giúp mình vs. Mik cần gấp
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VIII. Fill each blank with a given word (two words are not needed)

visit - good - stick - destroy - begins - least - feel - spreads - fewer - also - bad

We all know that it is very important to have healthy teeth. Good teeth help us chew our food. They also help us look nice. How does a tooth go bad? The decay (1..) in a little crack in the enamel covering of the tooth. This happens after germs and bit of food have collected there. Then the decay slowly (2..) inside to the tooth. Eventually, poison goes into the blood, and we may (3..) quite ill.

How can we keep our teeth healthy? First, we ought to (4..) the dentist twice a year. He can fill the small holes in our teeth before they (5..) the teeth. He can examine our teeth to check that they are growing in the right way. Secondly, we should brush our teeth with a toothbrush and fluoride toothpaste at (6..) twice a day—once after the breakfast and once before we go to bed. We can (7..) use wooden toothpicks to clean between our teeth after a meal.

Thirdly, we should eat food that is (8..) for our teeth and our body: milk, cheese, fish, brown bread, potatoes, red rice, raw vegetables, and fresh fruits. Chocolates, sweets, biscuits and cakes are (9..) especially when we eat them between meals. They are harmful because they (10..) to our teeth and cause decay.