It ______ that this method didn ’t work very well.A) turned aroundB) turned outC)turne

How long do you think______to finish this urgent task？A．did it take youB．it will take youC

______ that the earth was flat？A．Used it to be thoughtB．Did it used to be thoughtC．Was it

It can be inferred from the last paragraph that______.A．new methods to prevent terrorism o

I broke______the poverty barrier and it was education that did it.A．offB．awayC．throughD．up

This method saved half the labor that______to combat the insects separately.A．would not ha

See the flags on top of the building? That was _____we did this morning.[ ]A. whenB. whichC. whereD.