My first work unit was in a county which was located in the mid-east part of Anhui Province. My first work unit was in a county which was located in the mid-east part of Anhui Province.

I'm not sure what you mean by work unit. Maybe "workplace"? or "The first office I worked in".

My first work unit was in a county which wais located in the mid-east part of Anhui Province. My first work unit was in a county which is located in the mid-east part of Anhui Province.

The County has not moved, so you would use the present tense.

Our work place was on a small hillside with several rows of bungalows. Our workplace was on a small hillside with several rows of bungalows.

My second work unit was in the city l live in now, and it was also with somesurrounded by bungalows. My second work unit was in the city l live in now, and it was also surrounded by bungalows.

My second work unit was in the city l live in nowwhere l currently live, and it was also with somehad bungalows. My second work unit was in the city where l currently live, and it also had bungalows.

My third work unit was also in the same city and it only had three or four rooms. My third work unit was also in the same city and it only had three or four rooms.

My fourth work unit was the same as the second one, but when I returned there, it had addedwent back, three new buildings had been added. My fourth work unit was the same as the second one, but when I went back, three new buildings had been added.

My fourth work unit was located in the same place as the second one, but when I returned there, it had added three buildings. My fourth work unit was located in the same place as the second one, but when I returned there, it had added three buildings.

My fifth work unit is themy current onworkplace, and it is the most modern one I have ever worked in. My fifth work unit is my current workplace, and it is the most modern one I have ever worked in.

My fifth work unit is the current one, and Finally, out of all the units that I've ever worked in, my fifth and current work unit ihas the most modern one I have ever worked in.facilities. Finally, out of all the units that I've ever worked in, my fifth and current work unit has the most modern facilities.

It is in a tall and modern office building. It is in a tall and modern office building.

The decorations are is very luxurious, but I prefer to work inred the fourth work unit because it hasd a big yard, so I canould go to the yard to take a break and breatheget some fresh air. The decor is very luxurious, but I preferred the fourth work unit because it had a big yard, so I could go to the yard to take a break and get some fresh air.

The decorations are very luxurious, buyet I still prefer to work in the fourth work unit because it hasd a big yard, so I can go to the yard toallowing me take a breaks outside and breathe somin the fresh air. The decorations are very luxurious, yet I still prefer to work in the fourth work unit because it had a big yard, allowing me take breaks outside and breathe in the fresh air.