I don't know________.It doesn't matter,just saty with us please.I don't know________.It doesn't matter,just saty with us please.A.when the train will reachB.when the train will arrive为什么 为什么不能选择A?

I don't know________.It doesn't matter,just saty with us please.I don't know________.It doesn't matter,just saty with us please.A.when the train will reachB.when the train will arrive为什么 为什么不能选择A?
I don't know________.It doesn't matter,just saty with us please.
I don't know________.
It doesn't matter,just saty with us please.
A.when the train will reach
B.when the train will arrive
为什么 为什么不能选择A?

I don't know________.It doesn't matter,just saty with us please.I don't know________.It doesn't matter,just saty with us please.A.when the train will reachB.when the train will arrive为什么 为什么不能选择A?
reach 是及物动词,后面必须加地点,这里reach后面没有地点,所以不对

因为reach 是及物动词，后要接宾语，而这里没有宾语