er, ir, ur

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Across
  1. 4. The _____ moved slowly across the floor to the lettuce.
  2. 7. The birds _____ loudly every morning.
  3. 8. The _____ helped me when I was sick.
  4. 9. After falling, he dusted the _____ off his pants.
Down
  1. 1. Mom mailed the _____ to Grandma yesterday.
  2. 2. The _____ has no flowers.
  3. 3. Do not leave the oven on, otherwise the cake will _____.
  4. 5. We watched the beautiful _____ fly away.
  5. 6. The _____ of cattle quietly chewed their cud.
  6. 7. I can _____ milk to make butter.