you need ____the trees on this side of the street.

Question

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？

Answer 1

C

to water

need to do sth
water: 动词：浇水

watering
watering
n.
洒水, 浇水,

Answer 2

C need to do sth.

Answer 3

C，第一个是need to do，第二个是need sth

Answer 4

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