ПОМОГИТЕ ПОЖАЛУЙСТА ДАМ 25БАЛЛОВ

Example :Linda got an invitation letter yesterday, ...?-Linda got an invitation letter yesterday, didn't she


1.The friends were responsible for the project, ?
2.Tomorrow the students will arrange the date and time, ?
3.Jim didn't take part in the project,
?
4.There were a lot of students in the hall, ?