Certain courses are compulsory, others are optional. voluntary

Câu hỏi :

Mark the letter A,B,C or D on your answer sheet to indicate the word that is CLOSEST in meaning to the underlined part in each of the following questions.

A. voluntary

B. free

C. pressure

D. mandatory

* Đáp án

* Hướng dẫn giải

Đáp án : D

compulsory = mandatory : bắt buộc

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