One of the most important (3)_______ of a standardized test is time. You'll only be allowed a certain

Câu hỏi :

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.

A. how 

B. whether 

C. if 

D. unless

* Đáp án

* Hướng dẫn giải

Đáp án là C.

If you have time: nếu bạn có thời gian 

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