WHILE YOU ……… THE PIANO, I ……… A LETTER A. WERE PLAYING/ WAS WRITI...

35. - BAI TAP CAC THI TIENG ANH 60 DAP AN
BAI TAP CAC THI TIENG ANH 60 DAP AN

35. While you ……… the piano, I ……… a letter

a. were playing/ was writing       b. played/ was writing

c. were playing/ wrote      d. played/ wrote