Orthrozanclus, about half an inch long, . . . . . . . . about 505 million years ago during the Cambrian Period. A. lived B. had lived C. had been living D. has been living E. lives

[amp_mcq option1=”lived” option2=”had lived” option3=”had been living” option4=”has been living E. lives” correct=”option1″]

The correct answer is: A. lived

The sentence is in the past tense, so the verb must also be in the past tense. The other options are not in the past tense.

  • B. had lived is in the past perfect tense. This tense is used to talk about something that happened before another event in the past. In this sentence, there is no other event in the past that Orthrozanclus lived before.
  • C. had been living is in the past perfect progressive tense. This tense is used to talk about something that was happening before another event in the past. In this sentence, there is no other event in the past that Orthrozanclus was living before.
  • D. has been living is in the present perfect tense. This tense is used to talk about something that started in the past and continues to the present. In this sentence, Orthrozanclus is not living now, so this tense is not correct.
  • E. lives is in the present tense. This tense is used to talk about something that happens regularly or repeatedly. In this sentence, Orthrozanclus does not live now, so this tense is not correct.
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