The changes that ——place in air travel during the last sixty

来源：学生作业帮编辑：百度作业网作业帮分类：英语作业时间：2024/06/06 22:53:04

The changes that ——place in air travel during the last sixty years would have
seemed completely impossible to even the most brilliant scientists at the turn of the 19th century.
A:took B：have taken 为什么答案是选B呢?而不是A呢?

这句话的时间是during the last sixty years,在过去的六十年里,从过去到现在的六十年是一段时间,一段时间内发生的事情用完成时态,所以B have taken.
A took是过去时,时间应是过去的某个特定时间点.

The changes that ——place in air travel during the last sixty 改错 The changes that took place in air travel during the last The changes that have taken place in air travel during the l Great changes in china during the last 30 years.(take place) 英语题：great changes ——（take)place in China in the last 30 year Great changes have taken place in our hometown during the pa Great changes have taken place in my hometown in the last fi great changes have taken place in our homerown in the last 1 Great changes _____ (take) place in our city in the last ten Great changes _____(take)place in my school in the last few The air is fresher in this place than ( )in that place A.one 英语改错great changes took place in the last few years