21. Tooth care doesn’t include taking care of the teeth at home.(F)
->Dentists say that the most important part of tooth care happens at home.
22. We should brush our teeth for one minute.(F)
->To keep our teeth healthy, we should brush thoroughly for two minutes.
23. Among a lot of kinds of mouthwash, we should choose carefully.(T)
->Each tooth has five sides, but a toothbrush cleans only three of them.
24. Snacks and sugary food are harmful for the teeth.(T)
->Try to advoid snacks, sugary food or soda.
25. We should choose a toothbrush with a small head.(T)
->Among a lot of toothbrushes in the supermarket, we should choose a small-headed soft toothbrush.
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