Помогите с английским пожалуйста 40 баллов

Выберите один вариант из двух.
1) I ______ from university by the time you finish school.
а)will have graduated
b)am going to graduate

2) ______ help me with this task, please? — Ok, let’s see if I can help.
а) will you
b)are you going to

3)I’ve got a sore throat. — Oh dear! I ______ make you some tea.
а)will
b)am going to

4)I’m sure they ______ before 10 p.m.
а)will have arrived
b)will arrive