I / IF / ILL / NOT / ABSENT / SCHOOL / FROM / BE / YESTERDAY / . A....

4. - KIEM TRA HOC KY 2 CB
KIEM TRA HOC KY 2 CB
4. I / if / ill / not / absent / school / from / be / yesterday / . A. If I hadn’t been ill, I wouldn’t be absent from school yesterday.B. If I wasn’t ill, I wouldn’t have been absent from school yesteray.C. If I haven’t been ill, I wouldn’t have been absent from school yesterday.D. If I hadn’t been ill, I wouldn’t have been absent from school yesterday.