问题
opinion, life in the twenty-first century ismuch easier than ___________.
A:that used to be
B:it is used to
C:it was used to
D:it used to be
B:it is used to
C:it was used to
D:it used to be
正确答案是：
同类题型
I like everybody who lives here, but you are ______ of all.
Who is________ young lady with curly blond hair
When the news came _______ the war broke out, he decided to serve in the army
3In nature some animals actively defend the area_____________they depend for the resources
I in Microsoft Company for many years, but I have never regretted my final decisin to switch to