In Western countries, many children do chores to get pocket money. 1 usually start to do this at the age of 10.

    School students have to do homework and study 2 tests on weekdays. So they often do chores on 3. Some young kids only do 4 chores. So they don't get much money. But that's all right. Many of them only want to 5 candies. And candies are cheap！They help wash the dishes after dinner, and 6 the family cat or dog.

    When kids get 7，they want to buy more and more things. They want things that are more expensive than candies. Then they have to work harder！They often 8 the family car, cut the grass, walk the dog or cook dinner.

    Doing chores is a good 9 for kids to learn new things. For example, they can learn how to use a lawn mower(割草机) or 10 to cook. Of course, their parents help them at first.

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下列各组词语中，没有错别字的一项是（      ）