28. Identify the incorrectly punctuated sentence. (1 point)

Several new books, albums, and DVDs are on sale today.
The door is hanging by its rusty iron hinge, and it may fall at any moment.
I had a busy, industrious day at work today.
The lime, green walls have not been painted.

The lime, green walls have not been painted. (missing punctuation after "lime")

30. Identify the correctly punctuated sentence in each group. (1 point)

We forgot Mark ticket at our hotel.
We forgot Mark’s ticket at our hotel.
We forgot Marks’ ticket at our hotel.
We forgot Marks’s ticket at our hotel.

We forgot Mark's ticket at our hotel.

The incorrectly punctuated sentence is:

The lime, green walls have not been painted.

To identify the incorrectly punctuated sentence among the given options, we need to analyze the punctuation in each sentence. Here are the sentences and their punctuation:

1. Several new books, albums, and DVDs are on sale today.
2. The door is hanging by its rusty iron hinge, and it may fall at any moment.
3. I had a busy, industrious day at work today.
4. The lime, green walls have not been painted.

Looking at the sentences, we can see that all of them appear to be correctly punctuated. However, one sentence seems to have a punctuation error:

Sentence 4: "The lime, green walls have not been painted."

In this sentence, there is a comma before the adjective "green" that separates the two adjectives describing the walls. However, there should not be a comma in this case because the adjectives "lime" and "green" are coordinate adjectives that do not need to be separated by a comma.

Therefore, the incorrectly punctuated sentence is:

"The lime, green walls have not been painted."