Question

Which has a mismatch between subject and modifier?

Though sleeping, my dream was so realistic that I thought I was awake.
Though sleeping, I had such a realistic dream that I thought I was awake.
Though I was sleeping, my dream was so realistic that I thought I was awake.

Answer 1

The sentence that has a mismatch between subject and modifier is the first one - Though sleeping, my dream was so realistic that I thought I was awake.
The way this sentence is written, it would mean the dream was sleeping.