The words that can be used for synonym is grotto...
grotto:
→ <span>a small picturesque cave, especially an artificial one in a park or garden
</span>→ <span>an indoor structure resembling a cave.
</span><span>
Opening is a synonym for cave, a cave is a grotto.</span>
Answer:
true
Explanation:
prepositions must always be followed by a noun or pronoun
