Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

He missed the opportunity to study abroad. He didn’t realize the importance of English

A. He hadn’t realized the importance of English until he missed the opportunity to study abroad

B. Had he missed the opportunity to study abroad, he wouldn’t have realized the importance of English

C. It was only after he realized the importance of English that he missed the opportunity to study abroad

D. Not until he realized the importance of English did he miss the opportunity to study abroad

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

Wouldn't it better to let them know about the alternations to the plan?

A. Don't they think they should be informed about the changes in the plan? 

B. Shouldn't they have been consulted before the scheme was changed? 

C. Why haven't they have been informed about the new development? 

D. We'd better ask them to change the plan, hadn't we?

Gan có vai trò như thế nào trong điều hòa nồng độ glucozo máu?