Select the most appropriate meaning of the underlined idiom that can be substituted in the following sentence.

The game is now in full swing.

very active

The most appropriate meaning of the underlined idiom in the given sentence is very active.

The idiom "in full swing" means that something is happening very actively or vigorously. It is often used to describe a situation that is exciting, busy, or intense.

In the given sentence, the speaker is saying that the game is now very active. This means that the players are moving quickly and there is a lot of excitement and intensity in the game.

The other options are incorrect:

• very passive: This is the opposite of the meaning of the idiom "in full swing."
• very uninteresting: This is not the meaning of the idiom "in full swing."
• playing on the swings: This is a literal meaning of the idiom "in full swing," but it is not the idiomatic meaning.