Mark the letter A, B, C, or D on your answer sheet to indicate the cor

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

It was important that the mayor ………. before the curtain went up last night.

• A. A. arrive
• B. B. arrived
• C. C. must arrive
• D. D. had arrive

Cấu trúc: It + be + important that S + V (inf)
Dịch: Việc ngài thị trưởng đến trước khi rèm được kéo lên tối qua là rất quan trọng.