Please solve these pp questions for me

[jinalpatel]

• [Prehistoric] villagers [tended to] work harder, suffer [from] more diseases and eat [the] poorer diet than nomadic hunters diet.

• The major component of the sedimentary rock called shale is clay, an [earthy], fine-grained material consisting [primary] of a [particular] group of [crystalline] materials.

• Copper was [the first] metal used by humans and is [second only] to iron [into] its utility [through] ages.

• In United Sates, the [first roads] were paved in [colonial] times, first with logs, [latest] with cobblestones or brick, [depending] on the region.

• When [expelled] from the nucleus of an atom, a neutron is [unstable] and [decay] to [form] a proton and electron.

[Hermione]

• [Prehistoric] villagers [tended to] work harder, suffer [from] more diseases and eat [the] poorer diet than nomadic hunters diet.
  only words of superlative degree (eg. poorest) are preceeded by 'the'.
  

• The major component of the sedimentary rock called shale is clay, an [earthy], fine-grained material consisting [primary] of a [particular] group of [crystalline] materials. correct ans: primarily
  

• Copper was [the first] metal used by humans and is [second only] to iron [into] its utility [through] ages. correct ans:in
  

• In United Sates, the [first roads] were paved in [colonial] times, first with logs, [latest] with cobblestones or brick, [depending] on the region. correct ans: later
  

• When [expelled] from the nucleus of an atom, a neutron is [unstable] and [decay] to [form] a proton and electron. correct ans: decays (as neutron is a singular noun)

[vjlenin]

suja 84 is correct except in the first one.

[Prehistoric] villagers [tended to] work harder, suffer [from] more diseases and eat [the] poorer diet than nomadic hunters diet.

here, the first verb is tended to=did+tend to
secon and third are present: suffer from, eat.
so for them to be past too, the first verb's did should be general.
i.e.

[Prehistoric] villagers [did tend to] work harder, suffer [from] more diseases and eat [the] poorer diet than nomadic hunters diet.

eat the poorer is wrong too and the end should be 'did' because the whole sentence is a comparison. see harder, more and poorer.
i.e.
[Prehistoric] villagers [did tend to] work harder, suffer [from] more diseases and eat poorer diet than nomadic hunters did.

[Hermione]

Originally Posted by vjlenin

suja 84 is correct except in the first one.

[Prehistoric] villagers [tended to] work harder, suffer [from] more diseases and eat [the] poorer diet than nomadic hunters diet.

here, the first verb is tended to=did+tend to
secon and third are present: suffer from, eat.
so for them to be past too, the first verb's did should be general.
i.e.

[Prehistoric] villagers [did tend to] work harder, suffer [from] more diseases and eat [the] poorer diet than nomadic hunters diet.

eat the poorer is wrong too and the end should be 'did' because the whole sentence is a comparison. see harder, more and poorer.
i.e.
[Prehistoric] villagers [did tend to] work harder, suffer [from] more diseases and eat poorer diet than nomadic hunters did.

Aww.... I missed it. I stand corrected. Thanks.

[wasleys]

I think there is need for a degree of caution here.

My understanding of these questions is that there is only one of the options which needs correction. If that is the case then D is incorrect and should be the -> a.

However the sentence does not make sense with diet as the last word. If we assume it is a typo and, as vjlenin has suggested, it should be did, then the sentence makes sentence with the one change in D.

Michael