THE COMPUTER BROKE DOWN AGAIN, ……..A. SURPRISED THE TECHNICIAN B....

53. - TRAC NGHIEM ON THI TOT NGHIEDE CHNH SUA
TRAC NGHIEM ON THI TOT NGHIEDE CHNH SUA

53. The computer broke down again, ……..

A. surprised the technician

B. who surprised the technician

C. that surprised the technician

D. which surprised the technician