1.You can't have lived in Tunisia for ten years d) without learning some Arabic.
2 You must know Tokyo is expensive c) if you've lived there.
3 You must have met some fascinating people f) during your trip to Africa.
4 You can't be tired e) when you've just had a holiday.
5 You must be exhausted a) after all your hard work.
6 You may find it difficult to settle down b) after touring the world for years.