31. All his attention______on the computer game, so he even didn't notice his mother enter the room.
It was foolish of him to ________ his notes while taking such an easy test, and as a result, he got punished.
Don’t handle the vase as if it ____ made of steel.
—How about your journey to Mount Emei?—Everything was wonderful except that our car________twice on the way.
We ______ the difficulty together, but why didn’t you tell me?
—Do you have enough to________all your daily expenses?—Oh yes,enough and to spare.