No longer _______ in our office since it _______.
A.have typewriters been used / computerized
B.typewriters have been used / was computerized
C.have typewriters been used / was computerized
D.typewriters have been used / computerized
Đáp án và lời giải
Đáp án:C
Lời giải:
Vậy đáp án đúng là C.