Напишите по предложению на каждое время:Present Simpl, Present Continuous, Present Perfect, Past Simpl, Future Simpl

This girl often writes letters to her boy-friend. (present Simple)

Their children are reading a book in the park now. (Present Continuous)

I have been studying. (Present Perfect)

I was in Lomdon last year. (Past Simpl)

They will finally see mistakes in their program. (Future Simple)