Question

【题目】It’s good manners to be ________ while watching the raising of our national flag.

A. happy B. serious C. kind D. generous

Answer 1

【答案】B

【解析】试题分析：句意：当我们看国旗升起的时候，严肃是好习惯。A. happy高兴的；B. serious严肃的；C.kind好心的；D. generous慷慨的。所以选B。