If you have some trouble ___the railway station,please ask the police for help.A finding B findingIf you have some trouble ___the railway station,please ask the police for help.A finding B finding out C looking for Ddiscovering为什么是A 求各个

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If you have some trouble ___the railway station,please ask the police for help.A finding B findingIf you have some trouble ___the railway station,please ask the police for help.A finding B finding out C looking for Ddiscovering为什么是A 求各个
If you have some trouble ___the railway station,please ask the police for help.A finding B finding
If you have some trouble ___the railway station,please ask the police for help.
A finding B finding out C looking for Ddiscovering
为什么是A 求各个答案的区别.

If you have some trouble ___the railway station,please ask the police for help.A finding B findingIf you have some trouble ___the railway station,please ask the police for help.A finding B finding out C looking for Ddiscovering为什么是A 求各个
A找到
B查明
C表示寻找的过程
D首次发现

finding 是找到
find out多用于找出答案神马的
look for是找,找这个动作,不一定要找到
discover是发现,发现什么东西呀神马的

have trouble (in) doing sth 做某事有困难
find强调找的动作
find out强调找得结果

finding in itself is enough. no need for ''out'' as in B;
if the sentence is ''looking for'', then you'll be saying: if you are looking for the railway station.
lastly, if you were discovering the station or any area, you don't need the police to help you :)