The sentence does not pose a question of grammar, but of sense. Norway is a country, and as such it cannot be an industry. The sentence would be better understood if it read: Norway has had a great fishing industry for a long time.
The one that is NOT a sentence fragment and uses correct sentence grammar is:He liked to go fishing.
no_____If the sentence is You do do that (meaning You are in the habit of doing that) the grammar is perfectly correct and the sentence 'does have correct grammar'.
The correct grammar for this sentence is: "When did you send it?"
That sentence is grammatically correct.
No.
The grammar in the question is correct.
"Roger and I appreciate what you did" is correct grammar
The correct grammar is "Between you and me."
Yes, that sentence is correct grammar.
Yes, "you were correct" is correct grammar. This sentence is in the past tense and conveys that someone was right about something.
The sentence is grammatically correct.
Yes. What is not correct is your putting the article "a" before grammar.