1. I am reading ______ book. It’s ______ useful story.
A. a; an B. a; a C. the; the D. / ; an
2. --- Which would you like, tea or coffee? --- _______ is OK. I really don't mind.
A. Both B. Either C. None D. Neither
3. Our bus _________ on the half way and none of us knew what to do.
A. broke up B. broke off C. broke down D. broke