—How long do you think it will be______ man can finally solve the problem of cancer?—Well,it depends
Most workers are in _________ habit of having _________ quick lunch in the company every day.
--Thanks for your help. --_________.
—The weather here in summer is so changeable. Please take an umbrella when you go out. —________.
Our teacher looked here and there on the playground ________looking for something.
After the earthquake,the poor girl was found ________under the ruins of a church.