21. —They are quiet, aren’t they?
—Yes. They are accustomed ________ at meals.
A. to talk B. to not talk C. to talking D. to not talking
22. It was only after I read the passage three times that I understood what the writer really wanted to ________.
A. violate B. convey C. acknowledge D. undertake
23. The tourist industry is of ________ importance to the national economy.
A. punctual B. shallow C. vital D. complex
24. To the people’s surprise, the number of deaths ________ accidents ________ still rising.
A. arising from; is B. arising from; are C. arisen from; is D. arisen from; are
25. Why ________ you drive so many miles away for a supper when you can easily have it at one of the restaurants nearby?
A. might B. could C. would D. must
