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We have 206 ____________________ . They are hard and ____________________ . They support the body and ____________________ the heart , lungs and brain .

We have 600 ____________________ ! They are ____________________ and flexible . Some muscles move automatically , for example , the ____________________ .

____________________ are where two or more bones meet . ____________________ attach muscles to the bones . This allow the ____________________ to bend . The hip is a joint and so is the ____________________ .