21.---Alan got an A in the English e xam.
---Really? He has made great _________ this term.
A. development B. behavior C. influence D. progress
22.Confucius was a great thinker ________ saying are still helpful to us now.
A. whose B. who C. whom D. which
23. There _____ a great number of visitors visiting the small town, and the number of the visitors ______ growing every year.
A. is,is B. is, are C. are, is D. are, are
