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