Question

Fill in the blank with a suitable word in the sentence below:
My classroom is _____ the 4th floor, so I take the lift.

• A. on
• B. in
• C. at
• D. by

Hint:

Use “on” for floors: on the 1st floor, on the top floor, etc.

Answer 1

The Correct Option is A

Concept: Use the preposition {on} for floors in a building.
Step 1: Understand usage.
\[ {“on the 4th floor”} \Rightarrow {standard expression} \]
Step 2: Evaluate options.

• (A) on \checkmark correct usage
• (B) in $\times$ used for enclosed spaces
• (C) at $\times$ used for points/locations
• (D) by $\times$ means near or beside

Hence, the correct answer is on.