—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, trying to improve the situation .
28.How can they expect to learn anything________they never listen?
27.Only when_______senior high school________to show a great interest in poems.
26.— Why are you still here? Everybody has gone to attend the lecture by the president. — Oh, I__________about it!
25.Mr. Duncan raised an unnecessary question__________-he then failed to find an answer.
24_______the sale usually takes place outside the house ,with the audience on benches ,_______chairs or boxes。