1. (2020四上·讷河期中) 为下列句子选择正确的答语。

A. It's seventeen. B. It's nineteen. C. I'm in Class Three, Grade One. D. I'm number 10. E. It's ten o'clock.

1. （1） Which class are you  in ?
3. （2） What is your  number?
5. （3） What is the  time ?
7. （4） What is nine and eight ?
9. （5） What is ten and nine ?