Which sentence contains an inappropriate shift in mood?

Question

He went fishing every day but returned empty-handed.
If I wanted to watch the movie, I would have bought the tickets quickly.
I might be able to watch television tonight if I complete all my chores.
Go to the public library, and then you might find the book if it is there.

Answer 1

The sentence that contains an inappropriate shift in mood is:

"Go to the public library, and then you might find the book if it is there."

This sentence starts in the imperative mood ("Go to the public library") and then shifts to the indicative mood ("you might find the book if it is there"). The shift is inconsistent because it moves from a command to a conditional statement.