You_____ all those calculations! We have a computer to do that sort of thing.A.needn’t have done B.m

Some research workers completely ______ all those

The millions of calculations involved, ______ by hand, would have lost all practical value

You______ all those calculations! We have a computer to do all that sort of thing.A．wouldn

Those of us who smoke should have______ lungs X-rayed regularly since we are all aware of

The lawyer of the defendant met all those who were _____ the case .A.involved inB.conne

______ you return those books you have borrowed t