OUR EXPERIENCED AND SKILLED TECHNICIANS CAN BE OF MUCH HELP IN THE EVENT THAT YOU ________ DELETE SOMETHING ESSENTIAL FROM THE PROGRAM

13. - BÀI TẬP VỀ TỪ LOẠI
BÀI TẬP VỀ TỪ LOẠI

13. Our experienced and skilled technicians can be of much help in the event that you ________ delete

something essential from the program.

A. accident

B. accidental

C. accidents

D. accidentally