9．一Is there any possible way to help them get rid of such a bad habit? 一To tell the truth, it’s very hard．But we on this problem． A．worked B．had worked C．are working D．had been working 【查看更多】

 

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一Is there any possible way to help them get rid of such a bad habit?

一To tell the truth, it’s very hard．But we     on this problem．

A.worked             B.had worked            C.are working         D.had been working

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一Is there any possible way to help them get rid of such a bad habit?

一To tell the truth, it’s very hard．But we     on this problem．

A．worked  B．had worked     C．are working     D．had been working

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一Is there any possible way to help them get rid of such a bad habit?
一To tell the truth, it’s very hard．But we     on this problem．

A．workedB．had worked C．are working D．had been working

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