Question

In which one of the following sentences is but used as a preposition? In which one of the following sentences is but used as a preposition?
A. The lake is pretty, but it's too cold for swimming.
B. I would like to return to Italy, but I have no money.
C. I wanted to leave, but I was embarrassed to do so.
D. We discovered that Candy will do anything but work

Answer 1

The sentence in which the word but is used as a preposition is the last one - D. We discovered that Candy will do anything but work.
Here, the word but can be replaced with another preposition - except.
In all of the other sentences, but is used as a conjunction.