AnonymousIs the last sentence grammatically correct?
Yes.
Anonymous can 'no one' substitue for the noun phrase'
the copy shop' ??
Not really. Where would you make that
substitution?
No one means nobody at all; it doesn't refer to the
copy shop. The sentence is saying that there does not exist any
person or group of people who can do better than the copy shop in
question.
Anonymous what does the pronoun 'them' exactly substitue
for?
'the copy shop', or more specifically, the people who work
there.
Anonymous I don't know why (a) can't be also a possible
answer.
The dialog starts with a greeting formula.
Hi, Mark!
starts a conversation with a known acquaintance, a friend.
How often do you approach a friend and say 'hello' and then ask your
friend how long he has lived there? Does that sound like the
first question you would ask a friend of yours?CJ