写10个带数字的英语句子？

带数字的英语句子：

1.There are 40 students in my class.

2.He will be 15 years old.

3.This book cost me 3 dollars.

4.My room is on the floor 3.

5.My younger sister is in Class 3 Grade 5.

6.He was born in 2017.

7.He has been in China for 10 years.

8.His telephone number is 010-23567835.

9.They will come back at 4:30 p.m.

10.I get up at 7 every morning.