TOM FAILED THE EXAM ………. HE WAS LAZY.A. SO B. BECAUSE C. BECAUSE OF...

6. - BAI KIEM TRA 1 TIET SO 1 HK 1
BAI KIEM TRA 1 TIET SO 1 HK 1
6. Tom failed the exam ………. He was lazy.A. so B. because C. because of D. instead of