Select the most appropriate option to fill in blank no. 2.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. up.
The phrase 'lock oneself up in a room' is a common expression meaning to shut oneself inside and stay there, usually to avoid others.
Option 1 – over: “Lock over” is not a correct collocation in English.
Option 3 – out: “Lock out” means to prevent someone from entering, which is the opposite of the intended meaning here.
Option 4 – off: “Lock off” refers to securing or isolating a section (like a machine or area), which doesn’t fit the personal, emotional context.
Option 2 – up: Fits perfectly as it describes Shan shutting himself inside his room.