you need ____the trees on this side of the street.but the trees on the other side don't need _____.Ato water,to water B watering to be watered Cto water watering选哪一个?为什么?

问题描述:

you need ____the trees on this side of the street.but the trees on the other side don't need _____.
Ato water,to water B watering to be watered Cto water watering
选哪一个?为什么?

C前一个空need to do need为实义动词 而后一个空为need doing表被动

C,第一个是need to do,第二个是need sth

C
to water
need to do sth
water:动词:浇水
watering
watering
n.
洒水,浇水,

C need to do sth.