_______ CAREFULLY, HE WOULDN’T HAVE HAD THE ACCIDENT YESTERDAY

6. - BAI KIEM TRA 45 SO 2 LOP 12
BAI KIEM TRA 45 SO 2 LOP 12
6. _______ carefully, he wouldn’t have had the accident yesterday:a. If Peter driven b. If had Peter drivenc. If Peter had driven d. Unless Peter had driven