They need some more workers and money to build the bridge.改为

They need some more workers and money to build the bridge.改为否定句:
They （ don't ）（ need ） more workers and money to build the bridge.
理由：这里的need是实意动词,所以用don't或者doesn't否定,
当然need也有情态动词,它的否定为needn't,但是后面要加动词,如：needn't do
题目中need后没有动词,所以用don't need来否定