45. He______answered these questions.
A. exact B. exactly C. exacting D. exacted
46. The meeting will be______tomorrow.
A. have B. had C. hold D. held
47. If you learn this lesson carefully, you______the exam.
A. can pass B. passing C. passed D. wold pass
48. We will wait until you______your work.
A. finish B. finishes C. have finished D. will finished
49. He can’t get home______he has a ticket.
A. if B. until C. unless D. without
50. The result will be better if he______harder.
A. work B. works C. worked D. will work