What is beyond the mountain line? What looks like glasses? What is a castle in the air?

The question asks what is beyond the mountain line. In a literary or imaginative context, a "fairyland" often represents a magical place beyond ordinary boundaries.

• The correct answer is b) the fairyland.

The sentence asks what looks like glasses. Clear, still streams of water can be highly reflective, appearing like glass. This is a common poetic comparison.

• The correct answer is c) streams.

The phrase "castles in the air" is a common idiom that refers to daydreams, unrealistic plans, or fantasies.

• The correct answer is b) in the air.