——Is there any possible way to help them get rid of such a bad habit? ——To tell the truth, it’s very hard. But we_______ on this problem.
#103283
A
worked
B
had worked
C
are working
D
had been working
推荐题目
I walked slowly through the market, where people all kinds of fruits and vegetables. I studied the prices carefully and bought what I needed.
#100552
A
sell
B
were selling
C
had sold
D
have sold
The hotel wasn’t particularly good. But I _________ in many worse hotels.
#104596
A
was staying
B
stayed
C
would stay
D
had stayed
It is not our mistakes that define who we are; it is how we from those mistakes that counts.
#99344
A
differ
B
suffer
C
prevent
D
recover
They are living with their parents for the moment because their own house _______.
#100101
A
is being rebuilt
B
has been rebuilt
C
is rebuilt
D
has rebuilt
The wide spread of super hybrid rice around the world ______ the lives of millions and millions of people suffering from hunger to a great level.
#102778
A
has improved
B
is improving
C
improved
D
has been improving