可不可以说:When will she come?不加back 为什么?

可不可以说:When will she come?不加back 为什么? 可不可以说when will you reach讲下arrive 和reach 的区别 可不可以说 she feel so sad She is so sad 可不可以说She takes turns to do the dishes? 可不可以说下雪姗姗来迟? 可不可以说详细点？ 可不可以说find work 可不可以说get pay 惯性可不可以说减少 可不可以说5种鱼 可不可以说these money 可不可以说受向心力 我想用it is that强调for me.She will do something for me.可不可以说It is me that she wil do something for.for放哪里比较好? When will she come back? When will she come back have difficulty 搭配可不可以说have difficulty when doing sth.?为什么 She went to the park 可不可以说the park是宾语 然后the限定park吖 英语led to导致用法可不可以说it will led to ...还是it leds to