1、I ( am) at school every sunday.
2、He ( was) at the camp last week.
3、We ( were) students two years ago.
4、they ( are )on the farm quite often.
5、they ( were )eleven years old last year.
6、there will( be )a meeting next week.
7、I have( been )to beijing for 2 times.
8、the mobile phone( was )on the sofa yesterday evening.
不明白的再问哟,请及时采纳,多谢!