not only the parents but also their son ______ here for two years

not only the parents but also their son ______ here for two years

题目
not only the parents but also their son ______ here for two years
A.has come B.have been C.has been D.have come
可是后面是here 不应该用come么。
答案
补充:不能用come.因为come是瞬间动词,不能与后面的for two years 一段时间连用,has been here表示“到这里”,是正确答案.答案:C解释:not only … but also …连接两个名词作主语时,谓语动词的单复数形式要根据就...
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