作业帮一个很难的高中英语单选题----高手帮忙In my opinion, 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答案是D,但是我看不懂D项,it是代
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一个很难的高中英语单选题----高手帮忙In my opinion, 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答案是D,但是我看不懂D项,it是代
一个很难的高中英语单选题----高手帮忙
In my opinion, 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
答案是D,但是我看不懂D项,it是代指life的对吗?重点说一下it used to be 后面是不是省略了东西?如果是完整的,我怎么也理解不了,怎么可能以be结尾呢?
一个很难的高中英语单选题----高手帮忙In my opinion, 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答案是D,但是我看不懂D项,it是代
it 指life,答案D相当于it was before,但这里没有before,用了used to be,已经表示过去,所以结尾不用was,用了(used to )be.
看一下例子吧：
Life is much easier now than it was before.
Life is much easier (in the twenty一first century) than it was (before).
=Life is much easier (in the twenty一first century) than it used to be.
=Life （in the twenty一first century）is much easier than it used to be.
A be ... than B (be)
A can...than B(can)