. 单项选择(每小题1分,共15分)从A、B、C、D四个选项中选择可以填入空白处的最佳答案。( ) 21. David, do you think I can move the sofa by _?A. yourself B. you C. myself D. me( ) 22. Would you like some more dumplings?Yes, just _, please.A. a little B. little C. a few D. few( ) 23. These children quickly got _ with staying at home, so they went to the beach.A. boring B. bored C. interestin