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Geologists once thought that the molten rock known as lava [#permalink]
 27 Jun 2007, 21:35
Question Stats:
0% (00:00) correct
99% (00:37) wrong based on 0 sessions
Geologists once thought that the molten rock known as lava was an underground remnant of Earth's earliest days, sporadically erupting through volcanoes, but they now know that it is continuously created by the heat of the radioactivity deep inside the planet.
1. was an underground remnant of Earth's earliest days, sporadically erupting
2. had been an underground remnant of Earth's earliest days and sporadically erupted
3. was an underground remnant of Earth's earliest days, which sporadically erupted
4. would be an underground remnant of Earth's earliest days that sporadically erupted
5. was an underground remnant of Earth's earliest days, having sporadically erupted
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Confused between the use of Would and Was here ?? Explanations please.
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VP
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A for correct switch from Simple past to present.
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Trying hard to conquer Quant.
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ArvGMAT wrote: Geologists once thought that the molten rock known as lava was an underground remnant of Earth's earliest days, sporadically erupting through volcanoes, but they now know that it is continuously created by the heat of the radioactivity deep inside the planet.
1. was an underground remnant of Earth's earliest days, sporadically erupting
2. had been an underground remnant of Earth's earliest days and sporadically erupted
3. was an underground remnant of Earth's earliest days, which sporadically erupted
4. would be an underground remnant of Earth's earliest days that sporadically erupted
5. was an underground remnant of Earth's earliest days, having sporadically erupted
'was' required for logical switch between simple past and present tense.
1,3,5 - left
3 - 'which' points earths earliest days - out
1, 5 - hard choice.
Selected 1.
But, what is wrong with 5??
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syamee_u wrote: ArvGMAT wrote: Geologists once thought that the molten rock known as lava was an underground remnant of Earth's earliest days, sporadically erupting through volcanoes, but they now know that it is continuously created by the heat of the radioactivity deep inside the planet.
1. was an underground remnant of Earth's earliest days, sporadically erupting
2. had been an underground remnant of Earth's earliest days and sporadically erupted
3. was an underground remnant of Earth's earliest days, which sporadically erupted
4. would be an underground remnant of Earth's earliest days that sporadically erupted
5. was an underground remnant of Earth's earliest days, having sporadically erupted 'was' required for logical switch between simple past and present tense. 1,3,5 - left 3 - 'which' points earths earliest days - out 1, 5 - hard choice. Selected 1. But, what is wrong with 5?? 1 for me too.
5 says " having sporadically erupted" which is past tense while we require present.
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mgmat-700-level-sc-66657.html?hilit=geologist#p496641OA is A .. key point is Adverbual modifier can be placed anywhere in the sentence and should not necesarily touch the noun ... I marked A by POE....
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