A If he studies hard, he won’t fail the exam.
B If he didn’t study hard, he wouldn’t fail the exam.
C If he studied hard, he wouldn’t fail the exam.
D If he hadn’t studied hard, he wouldn’t have failed the exam.
A
Phương pháp giải:
Câu hỏi trên thuộc đề trắc nghiệm dưới đây !
Copyright © 2021 HOCTAP247