Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
You don't try to work hard. You will fail in the exam.
A. Unless you don't try to work hard, you will fail in the exam.
B. Unless you try to work hard, you won't fail in the exam.
C. Unless you try to work hard, you will fail in the exam.
D. Unless do you try to work hard, you will fail in the exam.
You don't try to work hard. You will fail in the exam.
A. Unless you don't try to work hard, you will fail in the exam.
B. Unless you try to work hard, you won't fail in the exam.
C. Unless you try to work hard, you will fail in the exam.
D. Unless do you try to work hard, you will fail in the exam.
Kiến thức: câu điều kiện
Đáp án B.