词形转换（共8小题，计8分）
【小题1】 It is necessary for everyone to brush his ________ after each meal. (tooth)
【小题2】 I have bought a new flat and it’s on the ________floor of the building.(nine)
【小题3】 As middle school students, we should know how to look after________. (us)
【小题4】The student missed the ________tour around Donggao Park. (enjoy)
【小题5】 We received Peter’s _______and went to his birthday party happily. (invite)
【小题6】             (luck), John got back the notebook that he had lost at the cafe.
【小题7】 It was _________for such a little girl to solve this hard problem in ten minutes. (usual)
【小题8】 Make a plan for your future study, and you will ________in the end. (successful)

To help your teeth grow strong, you must drink plenty of milk and eat green Vegetables. Then your body Will have the right chemicals(化学物质)that build teeth.You should brush your teeth after each meal Then few bits of food willbe left on or between them to cause decay(腐烂).Make sure that you turn thebrush and go up and down as well as(和)brushing sideways(向侧面地).Usedental floss(清牙齿用的牙线)to make sure all food is removed(移走)fromin between each tooth. If you can not brush your teeth after eating, rinse(冲洗)them with water. or eat an apple or a carrot. Try to visit a dentist(牙医)every six months. If there is a hole in a tooth, he or she will fill it. If you do not have it filled, then the hole Will grow larger. When a hole grows too big, he tooth may have to be taken out. It is better to keep all your second set of teeth for as long as possible. Filling a gap(豁口)where a tooth has come out with a kind of bridge and using a false(假的)tooth cost a lot of money.

阅读短文,并根据短文内容将句子补充完整:

1. Your first twenty teeth begin to grow about________.

2. Two kinds of food that are good for your teeth; They are________.

3. As well as brushing teeth, you should use________.

4. You should visit a dentist every________.

5. How many sets of teeth does every person have?

To help your teeth grow strong, you must drink plenty of milk and eat green vegetables. Then your body will have the right chemicals(化学物质)that build teeth.

You should brush your teeth after each meal. Then few bits of food will be left on or between them to cause decay(腐烂). Make sure that you turn the brush and go up and down as well as(和)brushing sideways(向侧面地）. Use dental floss(清牙齿用的牙线)to make sure all food is removed(移走)from in between each tooth. If you can not brush your teeth after eating, rinse(冲洗)them with water, or eat an apple or a carrot.

Try to visit a dentist(牙医）every six months. If there is a hole in a tooth, he or she will fill it. If you do not have it filled, then the hole will grow larger. When a hole grows too big, the tooth may have to be taken out. It is better to keep all your second set of teeth for as long as possible. Filling a gap(豁口)where a tooth has come out with a kind of bridge and using a false(假的)tooth cost a lot of money.

阅读短文，并根据短文内容将句子补充完整：

1.Your first twenty teeth begin to grow about______.

2.Two kinds of food that are good for your teeth; they are______.

3.As well as brushing teeth, you should use______.

4.You should visit a dentist every______.

5.How many sets of teeth does every person have?______