根据首字母写单词。 
Today is the f____day of your holiday.
Don’t w____  the baby up. She is sleeping.
He is playing c____ games.
—How often do you go to the library?      —Three t____  a week.
How long can I k____ it?
Wang Jing usually t____  a bus to school.
Mike wants to rent a fully f____house.
If you p____ in the wrong place, you’ll get a ticket.
She usually w____ TV in the living room.
The teacher is waiting for us. Let’s go to the t____  room.

块     快

①今天，我们很____乐。

②天很热，吃____西瓜吧！

共      工

③地球是我们____同的家园。

④爸爸是一名____人。

平常      非常

⑤元元____喜欢这件礼物。

⑥____都是妈妈来接我。

甲、乙为人口超10亿的国家，下图示意两国2015年人口年龄结构。缓解甲国人口问题的对策（    ）