题目内容
根据首字母，用词的适当形式填空
I've r________ out of the petrol in the tank, it's empty.
What's the p________ of the world？ It's aver 6 billion.
The design of the restaurant is very s________ according to the influence of different colours to people.
The white wall in the hospital makes me very t________.
Polar bears are very a________ animals.
