1. A factory is being built to recycle waste paper in this city.

2. The faucets is being fixed in the bathroom by Mr. Nam.

3. The bridge was being repaired when it collapsed by the workers.

4. The walls were being painted at this time yesterday.

5. The tree is being decorated for the Christmas.

1 A factory is being built by them to recycle waste paper in this city 

2 The faucets are being fixed  by Mr Nam in the bathroom

3 The bridge were being repaired by the workers when it collapsed

4 The walls were being painted by us at this time yesterday 

5 The tree are being decorated by them for the christmas