三小题英语,
1.The population of China is 5.5 billion.(同义句转换)
＿ ＿ 5.5 billion people in China.
2.China is developing and it has the largest population in the world.(合并成一个简单句)
China is a ＿ country ＿ the largest population in the world..
3.The student in their class work hardat English.
The student in our class work ＿ ＿ at English ＿ those in their class.