Because of the heavy snow we had to delay the visit until this weekend to the artgallery

问题补充：

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：

(答案→)A. being held

B. holding

C. to be held

D. held

解析： 考查非谓语动词作定语。根据these days可知现在也在举行当中，the artgallery艺术画展被举行，所以选A。