IV. Open the brackets putting the verb in the right tense. Dear Mary, I...just(receive) your letter and now I (write) to you. I am very busy preparing for my exams. It is 9p.m. now and I (sit) at my desk. I (sit) here since 11a.m. I (do/not) all the exersises yet. Thank you for everything you have done for me. I hope to hear from you soon. Yours, Helen.

Dear Mary,

I have just received your letter and now I am writing to you. I am very busy preparing for my exams. It is 9 p.m. now and I am sitting at my desk. I have been sitting here since 11 a.m. I have not done all the exercises yet.

Thank you for everything you have done for me. I hope to hear from you soon.

Yours,

Helen.