Using the Present Perfect Tense (2)

For each of the following sentences, choose the correct present perfect form of the verb.

For help with this exercise, see Chapter 19.

example

Current events (to reinforce) my fear of flying.

a. reinforced

b. have reinforced

  1. Question

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    Using the Present Perfect Tense (2) - For each of the following sentences, choose the correct present perfect form of the verb.: A number of recent crashes (to raise) questions about the risks of letting new pilots fly at night.
  2. Question

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    Using the Present Perfect Tense (2) - For each of the following sentences, choose the correct present perfect form of the verb.: The National Transportation Safety Board (to investigate) the circumstances surrounding these fatal crashes.
  3. Question

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    Using the Present Perfect Tense (2) - For each of the following sentences, choose the correct present perfect form of the verb.: The board (to state) that approximately eighty people die each year in crashes of privately flown planes.
  4. Question

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    Using the Present Perfect Tense (2) - For each of the following sentences, choose the correct present perfect form of the verb.: Evidence (to show) that disorientation is a major risk for inexperienced pilots.
  5. Question

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    Using the Present Perfect Tense (2) - For each of the following sentences, choose the correct present perfect form of the verb.: Nevertheless, the Federal Aviation Administration (to announce) that the current rules for new pilots are adequate.
  6. Question

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    Using the Present Perfect Tense (2) - For each of the following sentences, choose the correct present perfect form of the verb.: Some experts (to argue) that these types of crashes have decreased in number over the last twenty years.
  7. Question

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    Using the Present Perfect Tense (2) - For each of the following sentences, choose the correct present perfect form of the verb.: Other countries, such as Great Britain, (to create) laws that require new pilots to have special instruments for flying at night.
  8. Question

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    Using the Present Perfect Tense (2) - For each of the following sentences, choose the correct present perfect form of the verb.: In many cases, these instruments (to help) disoriented pilots distinguish the earth from the sky.
  9. Question

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    Using the Present Perfect Tense (2) - For each of the following sentences, choose the correct present perfect form of the verb.: As a result, the instruments (to prevent) pilots from crashing into the earth.
  10. Question

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    Using the Present Perfect Tense (2) - For each of the following sentences, choose the correct present perfect form of the verb.: Many Americans (to write) to their representatives and senators to try to get similar legislation passed in the United States.