—How’s your tour around the North Lake? Is it beautiful?—It __________ be, but it is now heavily polluted.
38. Donkeys and camels are still widely used in some parts of the world _____ of burden.
39. As you make your ____, so you must lie on it. (prov.)
40. --- What did you have for supper, Jack? --- I had some _____. cow B. ox C. bull D. Beef
41. If you don’t advance, you would be behind _____.
42. Which of the following groups is meat? _____