Tickets must be _ five das in advance.
举一反三
- Tickets must be ____ (purchase) two weeks in advance.
- Tickets must be purchased two weeks in advance. A: booked B: bought C: sold D: obtained
- Commuter train tickets cannot be booked in advance.
- You may get a discount if you book the tickets _______(advance).
- Schedule meetings and appointments in advance — a few days, a week, even a month in advance.