.The athletes stood, their national flag .
A. seeing, raised
B. watching, being raised
C. looked at, rising
D. noticing, rising
网友回答
A. seeing, raised
(答案→)B. watching, being raised
C. looked at, rising
D. noticing, rising
解析：考查非谓语动词。watch是注视,注意地看,分词短语做状语,being raised 修饰flag,国旗是被升起,要用被动语态。故选B。