Many large old houses have now been converted

I suppose by the time I come back in ten years？ time all these old house have been pu

How many questions have been solved up till now？A．16.B．8.C．6.D．20.

Many ways have been found______small and simple machine to process large and complicated m

Many of our men are off work with colds just now. We have been______with a skeleton staff.

Many ______ large and big business ______ been built up from small ones.

Up to now there have been many explanations _____