Sam will not graduate unless he doesn’t pass allthe tests. A B C D

Câu hỏi :

Sam will not graduate unless he doesn’t pass allthe tests.

                    A                          B                  C               D

* Đáp án

* Hướng dẫn giải

Chọn đáp án B hoặc C (B. unless => if hoặc C. doesn’tpass => pass)

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