climbing hills ____of great help to our health A.was B.were C.is D.are 选哪一个?of做什么成分?
问题描述：
climbing hills ____of great help to our health A.was B.were C.is D.are 选哪一个?of做什么成分?
答
选C
这句话的主语是：Climbing hills，谓语动词用第三人称单数。
of great help=very helpful
答
同学,很高兴回答你的问题
正确答案：选C.is
即：Climbing hills is of great help to our health.
翻译：爬山对我们的健康是有帮助的（有好处）.
解析：be of great + n.= be very + adj
所以这句话的同义句是；
Climbing hills is very helpful to our health.
of great help 是作表语
有不明白的请继续追问,