Answer: B) IN-IN
Explanation for this question is being written.
Answer: B) Before
Answer: A) For
Answer: B) Preposition of time.
Answer: B) On
Answer: B) During
Answer: C) Mr. Mohan will be in office until night.
Answer: B) For
Answer: A) In
Answer: C) At
Answer: A) On
Answer: C) In
Answer: D) For
Answer: B) (nothing)
Answer: A) Preposition
Answer: A) FOR
Answer: C) On
Answer: A) At
Answer: A) Between
Answer: A) At / at.
Answer: A) After
Answer: B) In
Answer: D) In
Answer: A) Since
Answer: D) On / there is.
Answer: B) FOR
Answer: A) Last month.
Answer: B) By
Answer: C) During
Answer: C) Since
Answer: B) Since
Answer: A) During
Answer: B) False
Answer: A) AT