中国大学MOOC: A _________ is a document that certifies the nationality of its holder for international travel.
举一反三
- 中国大学MOOC: _______ is not the necessary travel document when you go abroad.
- 中国大学MOOC: _______ is not the necessary travel document when you go abroad by air.
- 中国大学MOOC: Reading through travel books and travel journals gives you great ideas about local and international destinations and begins to expose you to new cultures.
- This kind of travel business travel.
- 中国大学MOOC: Nationality: China