Hi!
That paragraph looks like a gap-filling exercise to me, so I think you should use the before milk. The fact that it �s an uncountable noun makes no difference; it �s already been mentioned before, so it �s specific now. The is generally used both with countable and uncountable nouns.
I also think there could be a comma after dawn, but it �s optional.
According to this site - http://www.wvup.edu/jcc/pam/commas.htm (quoting):
Many writers use a comma after all
introductory prepositional phrases. However, a comma is not necessary
after a short introductory prepositional phrase unless it contains a verb form,
unless omitting the comma would cause misreading, or unless the phrase is a
transitional expression or an absolute phrase. An absolute phrase is one
that has no grammatical relationship to the rest of the sentence..
At the end of its first year of
operation, the company showed a small loss.
On June 15 you will receive the
materials you requested. Or: On June 15,
you will receive the materials you requested.
In order to succeed, we must work
harder and smarter. (The phrase contains the infinitive to succeed.)
By ordering now, we should save a
few hundred dollars. (This short phrase contains the gerund ordering.)
If done properly, the corrections
will not be noticeable. (The phrase is short, but it contains the participle
done.)
In my opinion, everyone deserves a
three-week vacation with pay. (In my opinion is an absolute phrase. It has no
grammatical relationship to any part of the rest of the sentence.)
Construction is three months
behind schedule; as a result, we will be unable to move into the new offices
until the end of May. (This phrase functions as a transitional expression.)
In the spring, rain may cause
flooding. (The comma is necessary to
prevent misreading. Not: In spring rain
may cause flooding.)
Hope I �ve helped a bit!
