One generation plants the trees under shade another generation rests.
John seemed puzzled about ______ the question meant.
―What do you think of your new Pad?―Good. I don’t think I can find a ______ one.
—Shall we go for a drink at one o'clock this afternoon?—________.Will two o'clock be OK?
My favorite writer is Mo Yan, some of ________ novels have a surprising ending.
It was a real race________time to get the project done. Luckily,we made it.