Составить предложения в 5 формах 1.pres.prog. 2.pres.simple 3.past simple 4.past prog. 5. future simple со словом letter (to send)

1.I am sending a letter. 2. I like to send letters. 3. I sent a letter. 4. I was sending a letter before you came. 5. I will send a letter tomorrow.