Water these plants or they will die.
A. Unless you water these plants, they will die.
B. Unless you watered these plants, they will die.
C. Unless you water these plants, they won't die.
D. If you water these plants, they will die.
Đáp án đúng là: A
Giải thích: Câu điều kiện loại 1 nhưng với unless, 2 mệnh đề phải có ý nghĩa tương phản nhau.
Dịch: Tưới nước cho những cây này hoặc chúng sẽ chết. -> Trừ khi bạn tưới nước những cây này, chúng sẽ chết.
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