Each line in the following passage has one mistake. find the mistake and correct it. There is one example which has been done for you.
Nowadays, keeping your teeth health is very important. Dentists can do a lot to improving your teeth. They can straighten your teeth by put wires on them. This wires push the roots of the teeth the right way. The goodest time for doing this is while the teeth are grew. A lot of dentists, however, prefer not to start doing this before a child is at less eight. Sometimes a dentist even used elastic bands to make a tooth straight. Sometimes pulled a tooth out can prevent the other teeth with growing too close to one another. |
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