HOA/ TAM / BE/ PEN PALS /FOUR YEARS/.A. HOA AND TAM HAS BEEN PEN P...

31. Hoa/ Tam / be/ pen pals /four years/.A. Hoa and Tam has been pen pals for four years.B. Hoa and Tam have been pen pals for four years.C. Hoa and Tam have been pen pals sence four years.D. Hoa andTam were pen pals for four years.