Three months since he hereA have passed;leftB has passed;leftC has past;has leftD has passed;was away

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Threemonths__sincehe__hereAhavepassed;leftBhaspassed;leftChaspast;hasleftDhaspassed;wasawayThreemont

Three months __ since he __ hereA have passed;leftB has passed;leftC has past;has leftD has passed;was away
Three months __ since he __ here
A have passed;left
B has passed;left
C has past;has left
D has passed;was away

Three months __ since he __ hereA have passed;leftB has passed;leftC has past;has leftD has passed;was away
B
since 后的动词用过去时,排除C D
表示时间,距离,重量等作主语谓语动词用单数,再排除A

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你好，很高兴能够在这里回答你的问题，这道题的正确答案应该为：
B
主语是三个月的时间,所以为三单,后用has
后面他离开这,为一般过去式
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I returned from abroad about three months ago(对about three months提问）__ __ you__ from abroad? first three months Only three more months to three months later中文是什么意思是three-month还是 three-months对 Three months __ since he __ hereA have passed;leftB has passed;leftC has past;has leftD has passed;was away plan to的同义词,三空!They plan to stay in the USA for three months.(保持原句意思）They__ __ __stay in the USA for three months. David __ Shanghai for more than three months.A,came B,has been to C,has been in D,has come to l have met him three months agol met him three months ago改成I have met him three months before Her baby is only ( ).He can't speak .A、three-month-old B、three months old.选哪个Her baby is only ( ).He can't speak .A、three-month-old B、three months old.选哪个我觉得是A,可答案是B,为什么?（）The girls don't go to school __ for three months用什么提问 three months是单数还是复数 three days months , weeks叫什么词 I have studied English for three months. about three and a half months ago in three months提问用什么 he was in school f____only three months Know you for three months是什么意思