Though ____ to see the strangers, the housewife gavethem a big smile and said hello.

Jack used to give most of his money to people in trouble. How do you like him —Some thinks he might be kind of _______. But more people are grateful to him.

David threatened_______ his neighbour to the police if thedamages were not paid

I don’t really like the author _____ I have to admit his books are very exciting.

You can never be________careful，the road is icy and slippery.