question:Question 34 Columbus ______________America more than 400 years ago. A. discovering B. discovery C. discovered D. had discovered

question:Question 35 My son usually _____________his homework in the evenings. A. is doing B. did C. do D. does

question:Question 36 The book is_______the adventure of three close friends. A. at B. on C. about D. from

question:Question 37 Kevin Cruiser has been promoted to assistant manager of production_______his long record of hard work and dedication to the company. A. given that B. furthermore C. because of D. up to