21. Niagara Fall is a great tourist ________, drawing millions of visitors every year.
A. attention B. attraction C. appointment D. arrangement
22. He is famous both _________a novelist and poet but he is more famous_________ his novels.
A. for; as B. with; for C. as; for D. like; as
23. ---Thank you very much for helping me out of trouble, Bob.
----__________.
A. With pleasure B. Don’t mention it C. That;s right D. I hope so
