Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
She only had a twenty–dollars bill with her when she landed at Hearthrow airport.
A. had
B. twenty–dollars bill
C. when
D. at
Đáp án B
Twenty-dollars bill -> twenty-dollar bill
Giải thích: không sử dụng hình thức số nhiều ở tính từ ghép