The floor of the attic needs ____if we are going to make it into a bedroom.空白为什么只能...The floor of the attic needs ____if we are going to make it into a bedroom.空白为什么只能填strengthening而不能填strengthened?
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![The floor of the attic needs ____if we are going to make it into a bedroom.空白为什么只能...The floor of the attic needs ____if we are going to make it into a bedroom.空白为什么只能填strengthening而不能填strengthened?](/uploads/image/z/10499947-43-7.jpg?t=The+floor+of+the+attic+needs+____if+we+are+going+to+make+it+into+a+bedroom.%E7%A9%BA%E7%99%BD%E4%B8%BA%E4%BB%80%E4%B9%88%E5%8F%AA%E8%83%BD...The+floor+of+the+attic+needs+____if+we+are+going+to+make+it+into+a+bedroom.%E7%A9%BA%E7%99%BD%E4%B8%BA%E4%BB%80%E4%B9%88%E5%8F%AA%E8%83%BD%E5%A1%ABstrengthening%E8%80%8C%E4%B8%8D%E8%83%BD%E5%A1%ABstrengthened%3F)
The floor of the attic needs ____if we are going to make it into a bedroom.空白为什么只能...The floor of the attic needs ____if we are going to make it into a bedroom.空白为什么只能填strengthening而不能填strengthened?
The floor of the attic needs ____if we are going to make it into a bedroom.空白为什么只能...
The floor of the attic needs ____if we are going to make it into a bedroom.空白为什么只能填strengthening而不能填strengthened?
The floor of the attic needs ____if we are going to make it into a bedroom.空白为什么只能...The floor of the attic needs ____if we are going to make it into a bedroom.空白为什么只能填strengthening而不能填strengthened?
need(需要)作及物动词,后面可接不定式或名词化的动名词作宾语.接不定式时表示主动;接名词化的动名词时有被动的含义,相当于不定式的被动语态.
sth need doing…… =need to be done……,表示某物需要被……,表被动