Taking photos in the mountains ( ) very interesting A.is B.are C.were D.look

问题描述:

Taking photos in the mountains ( ) very interesting A.is B.are C.were D.look

Taking photos in the mountains ( ) very interesting A.is B.are C.were D.look
答案:A
动词ing形式短语作主语,谓语动词用单数形式.