答案：C
因为：keep,hold,carry都是及物动词,continue有不及物动词的用法,而句子没有宾语,故选continue.
no one knows how long it will last.they don't know how long it will___
no one knows how long it will last.they don't know how long it will___
A.keep B.hold C.carry D.continue ,请问选择哪一个,为什么
A.keep B.hold C.carry D.continue ,请问选择哪一个,为什么
英语人气：700 ℃时间：2019-08-22 18:31:07
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