Fill in the blank with correct verb tenses
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7. Geological evidence ---- that dinosaurs ---- extinct at the boundary between the Cretaceous and Paleogene eras, about 66 million years ago. A) indicates / became B) has indicated / had become C) had indicated / will become D) will indicate / become E) was indicating / has become
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Hi Zeynep, let's solve this multiple-choice English grammar question together. We need to find the correct verb tenses for these two blanks.
Analyzing Verb Tenses
Let's look at the full sentence. It says: Geological evidence blank that dinosaurs blank extinct at the boundary between the Cretaceous and Paleogene eras, about sixty-six million years ago.
Geological evidence ____ that dinosaurs ____ extinct ... about 66 million years ago.
We have two distinct parts to analyze. The first part is the current state of geological evidence, and the second is a specific event in the distant past.
1. Evidence holding a truth (Scientific/General Fact)
2. Historical action (66 million years ago)
Let's focus on the second blank first. The phrase 'sixty-six million years ago' is a definite time marker in the past.
When we have a specific time reference in the past like 'ago', we must use the Simple Past tense.
Looking at our options for the second blank, we have: became, had become, will become, and has become.
| Option | Second Blank Tense |
|---|---|
| A | became (Simple Past) |
| B | had become (Past Perfect) |
| C | will become (Future) |
| D | become (Present) |
| E | has become (Present Perfect) |
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