The doctor is skilled at treating heart trouble and never accepts any gift from his patients, so he has a very good _______. 

 Mary had taken _____ to see that her guests had everything that they could possibly want.

On New Year’s Eve,New York City holds an outdoor __________ which attracts a crowd of a million or more people.

If you want to study the nature of the universe, first of all, you must be clear about its ________.

To her ________，the salesgirl still helps that old lady.