问题
In my opinion, life in the twentyfirst century is much easier than ________.[ ]
A: those 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
awake ,he finished a cup of coffee and ordered another. [ ]
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Is it strange that Rose should marry Henry?—I _______ you kept it between you and me. [ ]
Thank you for helping me with the heavy desk.—- ______________.
The prize of the game show is $30,000 and an all expenses____ vacation to China[ ]