Sometimes proper answers are not far to seek_____ foodsafety problem

I don’t think this TV set is of goodquality. Can you replace it with a new one— ___________. But I have to talk to mymanager first.

________ one and a half months enough for the project to be finished?—I am afraid not.The professor is ill and only after he recovers ________ go on with it.

_______ along the road, Mr. Smith met an oldfriend of his.

Every day students in our school will do outdoor activities ______ there is a heavy haze(雾霾).