根据下面句子的意思及所给的汉语，写出空缺处各单词的正确形式。
They live on the ________ (七) floor.
Thank you for ________ (邀请) me.
You'd better say that ________(再), he can't follow you.
Chinese is ________ (说) by the largest number of people in the world.
Have you ________ (写) down his telephone number?
Eating much sugar is bad for your ________ (牙).
根据句意，补全句中拼写不完整的单词。
She has got s _ v _ r _ l books about art.
Fang is my g _ v _ n name, and my family name is Liu.
单词拼写：根据句意在空白处填入一个适当的单词。
Jim has just returned ________ a short holiday.
The population of Australia ________ about seventeen million.