我的办公室在这栋大楼的二楼,他很小.用英文的定语从句怎么说?

My office, which is very small, is on the second floor of this building.

My office that is on the 2nd floor of this building is very small.

ujhg

My office is located on the second floor of this building，which is small.
总觉的用并列句比较好
My office is located on the second floor of this building，and it is small.

My office is very small which is in the 2nd floor of this building.