不全单词,使句子完整.1.Dave usually goes to bed late at night and is often s____in class.

不全单词,使句子完整.1.Dave usually goes to bed late at night and is often s____in class.
2.At p______ ,they don't have enough money to buy that car.3.We should realize the i_______of working hard.4.The old man spent his whole life on the s______of Shakespeare's works.5.I am sure you will a____your dream in the future.