the flower needs ----.or it will die A.water B.to water C.wa

问题补充：
我问的是A 可不可以?为什么?
the flower needs water 完全可以,
这时,water 是名词了:花缺水了.
C.watering
sth require/need doing 需要被做（主动表示被动）;
这是比较典型的.
通常的说法是D
We see tasks that need doing,wanting for hands to do them.
我们看到许多工作需要完成,却没有人手去做.
I don't think it is like homework which need doing every day.
我想,还是别把它当做家庭作业一样,要天天写.