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
John is not a man to count on, and it is very likely that the work ____ by the time he arrives here
Stay in bed longer today, _____ you were working too late last night[ ]
Our house is on the top of the hill, and in winter the winds ________ be pretty cold.[ ]
Going to the dentistreally frightens me —_______ Don’t be a chicken!
ang, ______ we owe a lot, comes from Shanghai, ______ lies in the east of China.