KEEPING OUR TEETH HEALTHY

            It’s 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 begins 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 spreads inside to the tooth. Eventually, poison goes into the blood, and we may feel quite ill.

            How can we keep our teeth healthy? First, we ought to visit the dentist twice a year instead of only doing so when we feel the pain in our teeth. He can fill the small holes in our teeth before they destroy 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 least twice a day-once after the breakfast and once before we go to bed. We can also use wooden toothpicks to clean between our teeth after a meal.

            Thirdly, we should eat food that is good 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 bad, especially when we eat them between meals. They are harmful because they stick to our teeth and cause decay.

1.     Good teeth help us …………………. our food.

            A. be nice                                                        B. have good eyesight

            C. chew                                                           D. be important

2.     When food and germs collect in a small crack, our teeth ………………….      

            A. become hard                                               B. send poison into the blood

            C. begin to decay                                            D. make us feel quite ill

3.     A lot of people visit the dentist only when ………………….           

            A. their teeth grow properly                           B. they have holes in their teeth

            C. they have toothache                                   C. they have brushed their teeth

4.     We ought to clean our teeth ………………….         

            A. after breakfast                                            B. before breakfast

            C. before bedtime                                           D. both B &C

5.     We shouldn’t eat a lot of …………………. 

            A. red rice                   B. fresh fruit               C. fish            D. chocolate

It was a sunny day when I first involved in community service. I (36) _______ a group of more than 20 students to do voluntary work in a school of (37) _______ children. Soon after we came there, the leader divided us into several teams with different duties. My job was to play with the children there. To be honest, I was a bit confused at first. There were many children and all of them (38) ________ health problems. However, most of them were well-behaved and friendly. They seemed to enjoy the volunteer’s visit and they played happily with us. We (39) _______ paper and pencils for the kids and instructed them to draw. We maintained a cozy atmosphere until the volunteer group had to leave. It was such an amazing experience to me that I could never forget it. I have involved in many other charitable projects (40) _______ my first voluntary experience. I think I will continue doing charity in the future if I have time.

There is a mistake in each line of the following passage. Find and correct it:

(5  0,2 = 1.0 pt)