Although it was not named ________ 1782, this kind of metal was used as early as 5300 BC.A.in B.for C.until D.since
_______whether he ever considered_______that during discussions, he said, “No, I’ve got my job and they’ve got their job.”
—How come you still work here? I hear your company has bought a new office building. —But the newly-bought building_______ .
It is becoming more and more difficult to_______the problems of traffic in some big cities of our country.
She thought_______impossible to finish so much work in a day.
.—I’ve told her many times, and she still forgot about it! —I understand. It’s true that she_______be very forgetful sometimes.