Ar ôl pymtheg wythnos, pwy yw pencampwyr 2018 - Ysgol y Preseli neu Ysgol Syr Hugh Owen? After 15 weeks, only one school can win Radio Cymru's annual pop quiz for schools!
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Ar ôl pymtheg wythnos, pwy yw pencampwyr 2018 - Ysgol y Preseli neu Ysgol Syr Hugh Owen? After 15 weeks, only one school can win Radio Cymru's annual pop quiz for schools!