青书学堂: The days ____ you could travel without a passport are a thing of the past.
举一反三
- Replace the words in italics by when, where or why. The days in which you could travel without a passport are a thing of the past. The days __________ you could travel without a passport are a thing of the past.
- The days_____You could travel without a passport are a thing of the past A: in which B: on which C: of which D: at which
- 青书学堂: ( )—Could you show me your passport? —_____.
- You have to get a passport and visa if you want to travel abroad.
- Before you travel to America, make sure your passport is( ).