Which sentences contain prepositions? check all that apply.

lena bought a new table to put the sculpture on.

at what time is the performance scheduled to begin?

the committee includes three students and two teachers.

that is the house in which i grew up.

jonathan looked under his desk for the lost keys.

Prepositions are the words that usually precede a noun or a pronoun and express a relation to another word or element in the sentence. For example in the sentence "Book is lying on the table"
on is the preposition.

The prepositions in the given sentences are highlighted below:

1) Lena bought a new table to put the sculpture on.
2) At what time is the performance scheduled to begin?3) The committee includes three students and two teachers.
⇒ (No preposition in 3rd sentence)
4) That is the house in which I grew up.
5) Jonathan looked under his desk for the lost keys.

Lena bought a new table to put the sculpture on.At what time is the performance scheduled to begin?That is the house in which I grew up.Jonathan looked under his desk for the lost keys.