问题
here any possibleway to help them get rid of such a bad habit ——To tellthe truth, it’s very hard. But we_______ on this problem.
A:worked
B:had worked
C:are working
D:had been working
B:had worked
C:are working
D:had been working
正确答案是：
同类题型
How do you want to deal with the old clothes— They will to the children in the small villages.
ws came as quite a shock to us, buthe seemed to be_________ surprised.
Apologizing to those you love is one of ______ things you must do to maintain a friendship.