________ ,loss implies gain; on the other hand, gain implies loss.
The company was named Gates Hall ______ a man named James Gates.
— Has Mary finished writing her article?— No, and it _____ before class was over.
—Your mother becomes more and more forgetful.—Yes. She searched for her cellphone for a whole day last Sunday but it ______ in her coat pocket the next day.
—Who______ it be that is knocking at the door?—It ______ be Father, but I’m not sure.
The letter he had been looking forward ____________ this morning.