Đáp án. A
Giải thích: Thức giả định dùng với tính từ necessary: It is necessary that S + (should V) (ai cần làm việc gì).
Dịch nghĩa: Anh ta cần phải đọc cuốn sách đó trước.
What a pity! You didn’t passed the exam.
If only_______________________________________
Experts advise that he should avoid being in strong sunlight for long periods.
It is advisable that_______________________________________
The little boy demands that she________to buy a car in the toy store.
Mrs. Mary demanded that the heater________immediately. Her apartment was freezing.
It is important to remember that Jenny________very differently from you. She may not agree to the changes you have made in the organization of the company
It is important that an efficient worker________his/her work on time.
She must find it important to take two medicines every day.
It is important that_______________________________________