Answer. The author and his mother went to the author's grandparents house to spend the night. The next day it was Monday and the author was to go to school. He was wearing the school uniform but he had no shoes.

The author and his mother spent their night after the fire accident in the house of grandparents.

Explanation:
After the fire accident, the author and his mother needed a place to stay for the night as their house was affected by the fire. They had to find a temporary shelter until they could make other arrangements.

House of Neighbours:
The option "a) in the house of neighbors" is not the correct answer because there is no mention in the question or the passage about the author and his mother staying in the house of neighbors. It is possible that the neighbors may have offered help or support during the fire, but it is not specified that they stayed in their house.

Fire Brigade Building:
The option "c) in the fire brigade building" is not the correct answer because the author and his mother would not have stayed in the fire brigade building. The fire brigade building is the place where firefighters and emergency services are based, and it is unlikely that they would have accommodation facilities for people affected by fires.

The Author's School:
The option "d) in the author's school" is not the correct answer because there is no mention in the question or the passage about the author and his mother staying in the author's school. Schools typically do not provide accommodations for students or their families in emergency situations like fires.

The House of Grandparents:
The correct answer is option "b) in the house of grandparents." The question states that the author and his mother spent their night after the fire accident, and the only option that mentions a place where they could stay is the house of grandparents. It is common for families to seek shelter with relatives in such situations, and grandparents often provide a safe and familiar environment for their grandchildren.

Therefore, the author and his mother spent their night after the fire accident in the house of grandparents.