根据句意及首字母或汉语提示完成单词。
China has the largest p in the world.
There are many i in China, such as Taiwan, Hainan.
A q__ __ means fifteen minutes.
Summer is the hottest s in a year.
1 think the f between you and me will last for long.
We should protect(保护)our___ _ (环境).
Children now are supposed to learn how to regard problems as ________(挑战).
I have a (秘密).I don't want to tell you.
It's our (责任)to keep our school tidy and clean.
Teachers should be (耐心的)with their students.