Question

—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 .

A．worked

B．had worked

C．a(chǎn)re working

D．had been working

Answer 1

C

試題分析：句意：--有可行的方法來改掉壞的習(xí)慣？--說句實話，很難。但是我們正在解決這個問題，試圖提高現(xiàn)狀。從第一句可以看出現(xiàn)在還沒有改掉習(xí)慣，所以應(yīng)是現(xiàn)在正在想法去解決，故選C。
點評：本題難度適中。動詞的時態(tài)是高考的熱點，它出現(xiàn)在單選和短文改錯中的次數(shù)較多，需要考生一定掌握不同的時態(tài)的用法。
即學(xué)即練：The five-year-old girl ____ by her parents.
A is looked  B has looked for  C is being looked for  D has been looked
解析：C。在帶有介詞的動詞短語用于被動語態(tài)句中，介詞不能省，否則就變成了不及物動詞短語，而不能用于被動語態(tài)的句子中。