21. She patted me on ______shoulder with a smile on ______ face.
   A. my, her           B. my, the          C. the, the          D. the, her
22. It is ______ that he will come to help soon because he has just gone out.
   A. likely            B. unlikely         C. like             D. dislike
23. ______ helped to save the drowning girl is worth praising.
   A. Who             B. The one         C. Whoever         D. Anyone