求几个英语填空答案谢谢!
1.In order not to offend people, you need to speak___________(礼貌地)
2.December 12 is my friend’s _______________(十二) birthday.
3.The__________(人口)of China is large.
4.Our classrooms are bigger than _____________(他们的).
5.We need two more_____________(餐刀)and forks.