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Author Question: They usually form between April and June when masses of cool, dry air from Canada __________ with ... (Read 77 times)

go.lag

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They usually form between April and June when masses of cool, dry air from Canada
  __________ with warm, moist air from the Gulf of Mexico.
 
  A) collide B) collides

Question 2

Everyone, at one time or another, __________ seen pictures of tornadoes.
 
  A) has B) have



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sierrahalpin

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Answer to Question 1

A

Answer to Question 2

A





 

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