Jack is late again. It is ____of him to keep others waiting.

It is a fact that _________ differences between countries may cause misunderstandings in communication.

-----How do you find your visit to the museum ?-----I thoroughly enjoyed it, it was ______ than I expected.

I think it quite _____ that you will finish the work on time if you work hard.

— Jack has spent an hour in the shoe shop．Hasn't he decided which pair of shoes to buy?— Maybe．Young as he is, he is         about his appearance．