Переделать в другие времена (прошедшее,настоящее,будущее) 1)my friend entered the medical institute last year 2)al students

1) My friend enters the medical institute.

My friend will enter the medical institute next year.

2) All students took exams in winter.

All students will take exams in winter.

3) The delegation leaves Tomsk.

The delegation left Tomsk on Monday.

4) Will you receive letters from your friends?

Did you receive letters from your friends?

5) The students of our group will attend all the lectures.

The students of our group attended all the lectures.

6) Some students will fail their entrance exams.

Some students fail their entrance exams.

7) The lecture lasts two hours.

The lecture lasted two hours.

8) Did we go to the disco last evening?

Do we go to the disco every evening?

9) He is good at mathematics, but the fails in physics.

He will be good at mathematics, but he will fail in physics.