По временам 1)my friend entered the medical institute last year 2)al students take exams in winter 3)the delegation will

Present Indefinite:All students take exams in winter.Do you receive letters from your friends?The students of our group attend all the lectures.Past Indefinite:My friend entered the medical institute last year.Some students failed their entrance exams.He was good at mathematics, but the failed in physics.Future Indefinite:The delegation will leave Tomsk on Monday.The lecture will last two hours. Shall we go to the disco in the evening?