YOU WILL FAIL THE EXAM, ____ YOU STUDY HARDER.A. AS B. IF C. UNLES...

21. - BÀI SOẠN TRAC NGHIEM-TA9- UNIT 10
BÀI SOẠN TRAC NGHIEM-TA9- UNIT 10

21. You will fail the exam, ____ you study harder.

A. as B. if C. unless D. although