Punctuation test

Which is correct?
1. "Come in!" He shouted.
2. "Come in!" he shouted.
3. "Come in!", he shouted.
Which is NOT correct?
1. I was feeling uncomfortable, the rain was running down my neck.
2. I was feeling uncomfortable; the rain was running down my neck.
3. I was feeling uncomfortable. The rain was running down my neck.
Why is this not correct: She came into the house, but they will be leaving it soon.?
1. The two clauses are grammatically too dissimilar to be separated by a comma.
2. The two clauses are semantically too dissimilar to be separated by a comma.
3. There are two stand-alone clauses and they can never be separated by a comma.
Why is this not correct: The car seemed old, and slow.?
1. Because the verb seem has been elided from the second part.
2. Because you can't have a comma before and in any list.
3. Because classifiers can't be separated with commas.
In this sentence: The butcher, the man over there with the cigar, has just won a fortune. the parts separated by commas are ...
1. in apposition
2. in opposition
3. in a list
4. in a reduced relative clause