If you are not careful, you will cut yourself with that knife

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Unless you are careful, you will cut yourself with that knife

If you are careful, you will cut yourself with that knife

Unless you are careless, you will cut yourself with that knife

Unless you were careful, you would cut yourself with that knife.

Giải thích

Đáp án đúng là C- Giải thích: Unless = If not: trừ phi, nếu không.
- Tạm dịch: Nếu bạn không cẩn thận, bạn sẽ làm đứt mình với cây dao đó.