These tress and also .
A. need trimming(修剪); need to water
B. need to trim; need watering
C. need trimming; need watering
D. need be trimmed; need be watered
网友回答
A. need trimming(修剪); need to water
B. need to trim; need watering
(答案→)C. need trimming; need watering
D. need be trimmed; need be watered
解析：
考查need的用法，need doing=need to be done“需要被…”,四个选项只有C符合，句意是：这些树需要修剪也需要浇水。