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Each nation has many people who voluntarily take care of others.

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We should join our hands to help _______ because they are so poor.

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The ______ are people who don’t have their own houses to live in.

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My friends and I sometimes _______ blood to cure patients in hospitals.

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It is difficult ______ handicapped children to study with other children.

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They repaired the furniture in our village school and also _______ the houses for elderly people.

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During summer vacation, we teach children in ______ areas how to read and write.