23. A. fortunately B. easily C. clearly D. immediately
22. A. simple B. different C. quick D. sudden
21. A. unexpectedly B. late C. clearly D. often
20. A. next B. clear C. final D. new
19. A. with B. into C. for D. to
18. A. suggestion B. conclusion C. decision D. discovery
17. A. secondly B. again C. also D. alone
15. A. discussing B. settling down C. comparing with D. studying
l6. A. extra B. enough C. several D. countless
14. A. look for B. talk to C. agree with D. depend on
13. A. In other words B.Once in a while C.First of all D.At this time