Đáp án
| 1. unless | 2. as long as |
| 3. if | 4. As long as |
| 5. provided | 6. unless |
| 7. as long as | 8. unless |
| 9. as long as | 10. provided (that) |
| 1. unless | 2. as long as |
| 3. if | 4. As long as |
| 5. provided | 6. unless |
| 7. as long as | 8. unless |
| 9. as long as | 10. provided (that) |
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