Your bike needs_____.You ‘d better do i right now.
A、cleanB
need+tobedone或need+doing都表示被动的动作。类似的动词还有want，require等。他们都是后面跟动名词的主动式或不定式的被动式。
Both of my brothers are now married ，so I have two_____.
Two-thirdsofhisproperty_____lostinthefire.
It‘s_____mypowertomakefinaldecisiononthematter.
Itwasnotuntilshehadfinishedallherwork_____.
_____youunderstandthisrule，you‘llhavenodifficultyindealingwithsuchproblems.
