They tired to find out( ) the new train ( ) A how far/how gone B how long/has gone C how far/went

问题描述:

They tired to find out( ) the new train ( ) A how far/how gone B how long/has gone C how far/went
D how far had /run

应该是how far the new train had gone.这里 go far是跑远了的意思.楼主粗心了,不是tired,应该是tried to .表示尝试过,但没有成功,也就是没有弄清楚火车到底开了多远了.用how long 的话,一般表示时间,后面用had left...