Using the Correct Verb Form for Regular Verbs in the Past Tense

For each of the following sentences, choose the correct past-tense form of the verb.

For help with this exercise, see chapter 25 of Real Essays 5e.

Example

  1. The dogs that we know today as house pets once (to specialize) in certain tasks that made them invaluable to humans.
    1. specializes
    2. specialized
    3. specializing
  1. Question 1.198

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  2. Question 1.199

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  3. Question 1.200

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  4. Question 1.201

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  5. Question 1.202

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  6. Question 1.203

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  7. Question 1.204

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  8. Question 1.205

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  9. Question 1.206

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  10. Question 1.207

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