Dechreuwyd ymgyrch i gadw'r drysau a'r ffenestri ar gau pan fydd y gwres ymlaen
Iau 2ail Tach 2023
This has been put in place, so if children and staff see outside doors open, they should close them. Same for windows.
Disgyblion sy'n cymryd rhan yn y gweithgaredd hwn: 347
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