21. A. arrive B. enter C. come D. get

　　22. A. possible B. easy C. new D. different

　　23. A. that B. what C. whether D. as if

　　24. A. who B. whom C. where D. which

　　25. A. realistic B. reasonable C. moral D. instructive

　　26. A. difficult B. impossible C. important D. necessary

　　27. A. Otherwise B. But C. While D. Furthermore

　　28. A. do B. make C. have D. are

　　29. A. lessons B. dreams C. experience D. magic

　　30. A. with B. to C. for D. of

　　31. A. knowledge B. skill C. words D. grammar

　　32. A. make B. get C. use D. have

　　33. A. a newspaper B. something C. everything D. a story

　　34. A. find B. learn C. know D. hope

　　35. A. too B. not C. all D. so

　　36. A. talk B. learn C. read D. think

　　37. A. that B. what C. which D. when

　　38. A. mind B. life C. world D. society

　　39. A. heart B. time C. money D. ourselves

　　40. A. what B. how C. when D. why