14. All the books on the shelf ----------------to me. D. Was A. belong B. belongs C. belonging 15. The trousers you bought for me ------------ me. D. is belonging A. don’t fit B. doesn’t fit C. fits 16. Mumps _________ usually caught by children. D. fit not A. are B. was C. is 17. The United States _________ between Canada and Mexico. D. were A. lying B. lies C. lain 18. Physics_________ us understand the natural laws. D. lie A. helps B. help C. have helped 19. The police _________ the robber. D. helped A. were arrested B. has arrested C. have arrested 20. The cattle __________ in the field. D. was arresting A. is grazing B. grazes C. has grazed 21. Either you or he ____________ wrong. D. are grazing A. are B. were C. have been 22. John as well as Mary __________ very kind. D. is A. were B. are C. is D. have been