A teacher's________to the cause of education is worth great respect of the whole society because it brings countless benefits to the development of society.
—The English exam is not difficult, is it? —______. Even Tom ______ to the top students failed in it.
I ____ talking to you. You never listen to me.
He has recently ______ golf to provide himself with some relaxation.
A _____ carries all kinds of things , but no passengers.
—What’s up? You look down. —I have piles of papers ______, but I type so slowly.