Question

Life in the twenty-first century is much easier than _____ A that used to be B it is used to

C it was used to D it used to be 请老师帮忙解释解决下 万分感谢

Answer 1

D ,used to do即过去经常做的意思，故选D。C be used to do是被用来做什么之意
希望对你有帮助哦亲~~~

Answer 2

A that used to be

Answer 3

D used to do就是【过去曾的】意思