необходимо написать предложения : я пишу письмо . я отправлю письмо

I write a letter. (Present Indefinite).

I am writing a letter. (Present Continuous).

I shall write a letter. (Future Indefinite).

I send a letter. (Present Indefinite).

I am sending a letter. (Present Continuous).

I shall send a letter. (Future Indefinite).

I read a letter. (Present Indefinite).

I am reading a letter. (Present Continuous).

I shall read a letter. (Future Indefinite).

I take the letter. (Present Indefinite).

I am taking the letter. (Present Continuous).

I shall take the a letter. (Future Indefinite).