the staffer said he did not know _____the meeting.a.when we started b.when will start c.when would start d.when to start答案及原因(详细)listen!helen is singing in the next room .it ____be helen,she is gone to beijing.a.can't
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![the staffer said he did not know _____the meeting.a.when we started b.when will start c.when would start d.when to start答案及原因(详细)listen!helen is singing in the next room .it ____be helen,she is gone to beijing.a.can't](/uploads/image/z/13502597-5-7.jpg?t=the+staffer+said+he+did+not+know+_____the+meeting.a.when+we+started+++++b.when+will+start++++c.when+would+start++++++++d.when+to+start%E7%AD%94%E6%A1%88%E5%8F%8A%E5%8E%9F%E5%9B%A0%EF%BC%88%E8%AF%A6%E7%BB%86%EF%BC%89listen%21helen+is+singing+in+the+next+room+.it+____be+helen%2Cshe+is+gone+to+beijing.a.can%27t)
the staffer said he did not know _____the meeting.a.when we started b.when will start c.when would start d.when to start答案及原因(详细)listen!helen is singing in the next room .it ____be helen,she is gone to beijing.a.can't
the staffer said he did not know _____the meeting.
a.when we started b.when will start c.when would start d.when to start
答案及原因(详细)
listen!helen is singing in the next room .
it ____be helen,she is gone to beijing.
a.can't b.mustn't c.may d.should
the staffer said he did not know _____the meeting.a.when we started b.when will start c.when would start d.when to start答案及原因(详细)listen!helen is singing in the next room .it ____be helen,she is gone to beijing.a.can't
The staffer said he did not know _when we started_ the meeting.选A.
B显然错误;C项start应该在the meeting后面,而且也没有必要用过去将来时;D不定式表示将来的动作,不对.
It can't be helen.选A,表示“不可能”.