1. (2021五下·通榆期末) 用所给单词填空，补全句子。

at   on  in

1. （1） I often eat dinner 7 p. m.
3. （2） l have a music class Thursday.
5. （3） I can play with snow winter.
7. （4） I usually watch TV the morning.
9. （5） The birthday party is July 5th.