One of the great things about science is that it has taught us to be __________ about surface appearances. The world seems flat, but it is, in fact, round.

  Of the Kar’s boys, Robert is the richest; in other words, Andrew and Krist are _____.

----I wonder why Mary is so unfriendly to us.----She is _____ than unfriendly, I’m afraid.

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

—You don’t look well! What’s the matter?—My son is _______ to computer games. And I have no idea what to do with it.