Exercise 3: People have two sets of teeth during their (1)______. A full set of baby teeth contains 20 teeth. Babies usually get their first tooth (2)_______ they're 6 months old. As they get more teeth, they are able to chew a wider variety of foods. Baby teeth are important for (3)_______, and also hold space for the larger, permanent teeth to come incorrectly. So, it is important to care (4)_____ baby teeth even though they will eventually fall out. Around age 6, baby teeth usually start to fall out to make (5)_______ for the permanent teeth. Around age 12, a child has usually lost all her baby teeth. Adults have larger mouths and need more teeth for chewing. An (6)_______ person has 32 teeth in a full set. 1. A. life B. lifes C. live D. lives 2. A. when B. until C. at D. so 3. A. chew B. to chew C. chewing D. chewed 4. A. along B. with C. for D. over 5. A. room B. mistake C. appointment D. noise 6. A. young B. old C. elder D. adult Exercise 4: Do you know that there are germs everywhere? They are in the air we breathe, in the food we (1) __________ and even on the clothes we wear. These germs make us (2) __________. That is why we must be clean. We should wash our (3) __________before each meal. We should keep our clothes and personal things clean. We should brush our teeth and bathe (4) __________. (5) __________fingernails should be short and clean (6) __________ they collect dirt and we handle food with our hands. 1. A. eat B. has C. drink D. take 2. A. illness B. illnesses C. ill D. strong 3. A. face B. hands C. hair D. teeth 4. A. regular B. irregular C. regularly D. irregularly 5. A. My B. Our C. Their D. Her 6. A. because B. but C. so D. although Exercise 5: Board games are games you play on a special board, with one or more players. You usually move an object (1) _____ the board and there is often a dice with spots on. Players throw the dice. The number of spots on top (2) _____them how many moves they can make, (3) _____ luck is sometimes important in these games. Board game are very popular for families to play at home. Traditional board games are good because family (4) ________ of all ages can play together. Monopoly is the best-selling board game. In Monopoly, you buy and sell houses, hotels, and stations. When you win, you get rich. But when you lose… don’t (5)________. It’s (6) ______ Monopoly money, not real money! 1. A. around B. for C. over D. across 2. A. keeps B. gets C. tells D. helps 3. A. and B. or C. so D. but 4. A. mates B. people C. person D. members 5. A. worrying B. worry C. be worry D. worried 6. A. just B. very C. only D. A & C are correct