1. —Please accept my apology for taking your book by mistake.
—______ It can happen to anyone.
A. Oh, that's all right. B. How can you do that!
C. Where is my book? D. Don't do that again.
2. ¾What do you remember Alexander Graham Bell as?
¾As ______ inventor of ______ telephone.
A. an; / B. the; a C. the; the D. /; the
