When people send a telegram they do not include unnecessary words because it ______the cost.
B．has been increased
If oil______on the frozen north coast in the 1960s, an 800-mile pipeline would not have been constructed to bring it to the south coast.
A．was not discovered
C．had not been discovered
D．had been discovered
I would have come to see you had it been possible, but I______so busy at that time.
She claimed that he______able to give more intimate details if he had been properly qualified.
B．should have been
Jenny Edward divulged her intention of trying vaccination under a bond of secrecy because she feared ridicule if they______.
Had the vote______the other way, it would have meant the end of democratic decision-making in the country.
While it is essential that the text cover the subject adequately, it is also important that it______neither too detailed nor too complex for the intended reader.