Not until a monkey is several years old _______ to exhibit sign of independence from its

Câu hỏi :

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

A. it begins

B. does it begin

C. and begin

D. is it begin

* Đáp án

B

* Hướng dẫn giải

Đáp án B

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