阅读理解：判断正误题

Extended family

In an extended family, all the people share one household. Apart from parents and children, there may be other family members: grandparents, aunts, uncles, cousins, etc. That is to say, a large family may have more than two generations, and often there are more than two adults from different generations of a family.

The family members live together for many reasons. They may help to bring up children or to take care of an ill relative. They may also help with saving money. Sometimes children are brought up by their grandparents, for their parents have died or can never take care of them. Many grandparents look after the children, particularly when both parents are busy working. This large family is called extended family. It can be found all over the world. The number of these families has increased by 40 percent in the past ten years. Most of such families live happily together.

操作提示：句子正确选择下拉选项框为“T”；句子错误选择下拉选项框为“F”。

1. In an extended family, people live in different houses.（）

2. An extend family includes at least three generations. （）

3.In an extended family, children are looked after by their grandparents because their parents are traveling around. （）

4. Extended families can be found all over the world. （）

5. Children can live happily with their parents and grandparents. （）