Since it is being used as the object of he had done, the correct form is well.
In order to agree with the first part of the sentence, you must be used.
The dependent clause needs to be separated with a comma.
A comma is required to separate the clause.
The clause needs to be separated with commas.
A comma is not necessary, but if it is used it should be inside the quotation marks.
Only a comma is needed to separate the dependent clause.
The original sentence is correct.
No punctuation is necessary.
The word order should be altered to remove awkwardness.
The original sentence is correct.
The punctuation should be the same for both of the parallel clauses.
A comma is necessary if an attribution is going to be made.
There is no need for punctuation to separate these two continuous actions.
The original sentence is correct.
A person is singular, so the words him or her are appropriate.
Susan is a person, so the appropriate pronoun is who.
This version restores the sense to the sentence.
Although the sentence as it is written is not technically incorrect, version C is easier to read because it puts the verb clause who built the business in front of the relative clause from the ground up.
This sentence is correct as written.
"The contraction for you are is inappropriate. Also, the two clauses express slightly different ideas and should therefore be separated by a semi-colon."
