题干
Because of the heavy snow, we had to delay the visit until this weekend to the artgallery ____ in the center of our city these days.
A：being held
B：holding
C：to be held
D：held
答案(点此获取答案解析）
A
，下到河里一些后，河岸上还有9只。下到河里的 
有多少只?
