Fiveminutesearlier,------theycouldhavecaughtthelastNO.127bus.A)butB)soC)andD)or这个道题选C.我选的是D,我只这样想的,或许早在5分钟之前,他们本应该追上车的.为什么会选C呢?

Question

Five minutes earlier,------they could have caught the last NO.127 bus.
A)but B)so C)and D)or
这个道题选C.我选的是D,我只这样想的,或许早在5分钟之前,他们本应该追上车的.
为什么会选C呢?

Answer 1

Five minutes earlier, and they could have caught the last No. 127 bus. = If they were five minutes earlier, they could have caught the last No. 127 bus.
该句句意为：如果他们提早五分钟,就会赶上最后一班127公交.
祈使句（表条件）+ and + 主句（表结果）.
or 意为“否则”,与题意不符.