You must book your Saver return ticket __________ days in advance.
A: 8
B: 7
C: 31
D: 50
A: 8
B: 7
C: 31
D: 50
举一反三
- If you are<br/>planning to travel by air, you’d better book the ticket<br/>______ advance.
- Have you ______ your ticket? A: book B: books C: booked D: booking
- If you get the Temporary Passenger ID you must take ____ with it when you get on the train. A: baggage B: Ticket C: book D: bus
- Schedule meetings and appointments in advance — a few days, a week, even a month in advance.
- The book ___ to the library on time. A: must return B: must return C: must be returned D: returned