279. The Palace Museum has many art treasures. In this sentence, "treasure" means ____.
It is difficult for my teacher to my mistakes in my composition. He is so careful!
I have many friends,some are businessmen.
He used to ______ cards, but now he is used to _______ a walk after supper.
He is considered ___________ the work ahead of time.
None of them could understand your meaning, _________?