In my opinion,the traffic in our city is much more-convenient than ____.A.that it used to be

问题描述：

In my opinion,the traffic in our city is much more-convenient than ____.A.that it used to be
B.it is used to C.it was used to D.it used to be 该选哪个,求高手指教,

答

D
In my opinion, the traffic in our city is much more-convenient than it used to be.
在我看来,我们城市的交通比以前方便多了.
used to do sth “过去常常做某事,而现在不做了"

used to do sth. / be used to doing / be used to do的区别

used to do sth. 是“过去常常做某事,而现在不做了”或过去持续存在的情况,其中used只有过去式一种形式,to后面动词用原形.如：
I used to go to work on foot, but now I usually ride a bicycle there.
我以前常常走路上班,现在我通常是骑自行车去上班了.
I used to live in Pudong when I was a boy.
我当我是个男孩时我常常住在浦东.
be used to doing 是“习惯于做某事”,其中used相当于形容词,to是介词,后面用名词、代词或者-ing形式.如：
I am already used to living in the countryside.
我已经习惯住在乡下了.
He is used to the climate in southern China.
他已经习惯中国南方的气候了.
be used to do 是“被用来做某事”,它是 use sth. to do (用某物做某事)的被动结构.如：
The case is used to keep the old books.
(比较：We use the case to keep the old books.)
这个箱子是用来装旧书的
（比较：我我们使用这个箱子来装旧书）

In my opinion,the traffic in our city is much more-convenient than ____.A.that it used to be

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