-_____the population of China?-_______over 1,300,000,000.
It’s reported that several hundreds of young children have gone _________in our country, and their parents feel very sad about the _______ of them.
Ronald Amundsen is considered to be one of the greatest ________ in history because he was the first man to reach the South Pole (南极).
— Is Russia _____ European country? — Yes, though a large part of it is in _____ Asia.
I don't know ________ up so early last Sunday.
Why not __ your teacher for help when you can’t finish ___ it by yourself?