We look forward to the day when the motorcar has been replaced by some less dangerous of

问题补充：

We look forward to the day when the motorcar has been replaced by some less dangerous of transport.

A. methods

B. means

C. manners

D. ways

答案：

A. methods

(答案→)B. means

C. manners

D. ways

解析：means of transport“交通方式”，means常跟介词by搭配，method常指系统的一套方式方法，如teaching methods，也可与by搭配，而manner则指行为态度的样子、方式，作品的风格、手法，与in搭配。way是使用最广泛的词，与in连用。