Question

Ben peeped into the room. His brothers were sleeping in the room.
Group of sentences

Answer 1

Ben peeped into the room while his brothers were sleeping in the room

Answer 2

The answer after grouping the given sentences is following - Ben peeped into the room where his brothers were sleeping.

A sentence can be referred as the textual unit that consists of 1 or more than 1 word which is linked grammatically in case of non-functional linguistics.

In case of functional linguistics, a sentence can be the unit of the written texts which are delimited by various features i.e. upper case letters and exclamation marks.