Directions: In the given question below, four sentences are given that may or may not contain an error. Choose the one that is grammatically as well as contextually correct and meaningful. If all the sentences are correct, mark "All are correct" as your answer.
1
When he got home, he found that his flat had being burgled.
2
Ravi hasn’t returned from his trip, hasn't he?
3
She has not clean her room, so she is punished.
4
She informed me that she had been preparing the plan for the past two days.
5
All are correct