Travelling by air is ______ more expensive than by train even though the air tickets are on discoun

问题描述:

Travelling by air is ______ more expensive than by train even though the air tickets are on discoun
A.very B.a lot of C.many D.far

D
只有D选项才能和more搭配
构成短语far more表示..贵得多
所以整句的意思是,尽管机票打折,但是同火车比起来,坐飞机还是要贵得多