collective nouns

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Across
  1. 4. That____is filled with students
  2. 5. a____of wolves
  3. 8. A____sentenced me to 15 years
Down
  1. 1. get that stack of____
  2. 2. look at the_____of birds
  3. 3. you have to do this as a_____
  4. 5. Look at that Lion____
  5. 6. look at the people in the big____
  6. 7. its a___of elephants