If you want a cheap air ticket, you must well in advance. A. book B. buy C. engage
If you want a cheap air ticket, you must _____ well in advance.
A. book
B. buy
C. engage
D. reserve
If you want a cheap air ticket, you must _____ well in advance.
A. book
B. buy
C. engage
D. reserve
Đáp án: A
Giải thích: book in advance: đặt trước
Dịch: Nếu bạn muốn mua vé máy bay rẻ, bạn phải đặt trước.