At times ,worrying is a normal, ________response to a difficult event or situation—a loved one being injured in an accident , for example.

 It was _______ to see so many ________ people in a small town.

Life is a cup, and under most           , it’s up to you to decide whether it’s a drinking cup (beiju) or a toothbrush cup (xiju).

 He got completely______ when he saw both Lucy and Lily, who are twin sisters.

Mr．Smith is one of the ____ customers to our restaurant．