1) In the United States……. is generally the responsibility of municipal governments. a) (A) for water treatment  b) (B) water treatment c) (C) where water treatment d) (D) in which water treatment 2) Crop rotation …. of preserving soil fertility.  a) (A) it is one method  b) __ (B) one method c) ____ (C) a method is one d) _ _ (D) is one method 3) ……… the dollar as its monetary unit in 1878.  a) __ (A) Canada adopted  b) __ (B) Adopted by Canada, c) ___ (C) It was adoptedby Canada d) ___ (D) The Canadian adoption of 4) …..almost impossible to capture the beauty of the aurora borealis in photographs.  a) (A) Being  b) __ (B) His c) __ (C) There is d) __ (D) Is 5) Usually, political cartoons ______ on the editorial page of a newspaper. a) __ (A) appear  b) ___ (B) whose appearance c) __ (C) by appearing d) __ (D) when they appear 6) ………………two major art museums, the Fogg and the Sadler.  a) __ (A) Harvard University has  b) __ (B) At Harvard University  c) ___ (C) Harvard University, with its  d) __ (D) There at Harvard University 7) American actress and director Margaret Webster ______ for her production of Shakespearean plays.  a) ___ (A) who became famous  b) ___ (B) famous as she became c) ___ (C) becoming famous d) ___ (D) became famous 8) …………..gas tanks connected to welding equipment, one full of oxygen and the other full of acetylene.  a) __ (A) It is two  b) __ (B) Of the two c) __ (C) There are two d) __ (D) Two 9) Compressed air ______ the power to drive pneumatic tools.  a) __ (A) by providing  b) ___ (B) provides c) ___ (C) that provides d) ___ (D) the provision of 10) ……………by cosmic rays. a) (A) The earth is constantly bombarded  b) __ (B) Bombarded constantly, the earth c) __ (C) Bombarding the earth constantly d) ___ (D) The earth's constant bombardment 11) ………….primary colors are red, blue, and yellow.  a) ___ (A) There are three b) __ (B) The three c) __ (C) Three of them d) __ (D) That the three 12) ………who was elected the first woman mayor of Chicago in 1979.  a) (A) It was Jane Byrne  b) __ (B) Jane Byrne  c) __ (C) That Jane Byrne d) __ (D) When Jane Byrne 13) Every computer consists of a number of systems ______ together.  a) __ (A) by working  b) __ (B) work c) __ (C) they work d) __ (D) that work 14) On the Moon, ______ air because the Moon's gravitational field is too weak to retain an atmosphere.  a) __ (A) there is no  b) __ (B) where no c) __ (C) no d) ___ (D) is no

EXERCISE 17

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