Another set with solutions. good luck to you all for the

Hi Marcab,
Very nice effort !
I have a little doubt regarding following SC...Hope you will throw some light on it.

For almost five thousand years after its beginning 2.5 million years ago, Homo habilis
roamed the earth, lived in semi-permanent camps, gathered food and shared their
economy.
A. For almost five thousand years after its beginning 2.5 million years ago,
B. Beginning 2.5 million years ago for a period of almost five thousand years,
C. Beginning a period of almost five thousand years 2.5 million years ago,
D. During five thousand years, a period beginning 2.5 million years ago,
E. Over a period of five thousand years beginning 2.5 million years ago,

For option D : Whether the intended meaning of the presented question is the only error with this option or am I missing something else here? Though "Verb+ing" modifier is the best describing the noun " a period "
For option E : "Verb+ing" modifier without comma must modify precedent noun, but here the present case is "Noun + prepositional phrase + Verb + ing "
Need your expert comment!

Awesome collection. Thaaaaaaaaanks

Marcab ... Can you please help me to know if this covers the entire range 600-800 of difficulty level.
I randomly picked up a few and coundnt find 7000+ level questions...
Still, this is a great collection, and nicely explained answer choices.

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