Question

me pueden ayudar en pasar de voz activa a voz pasiva las siguientes oraciones 1 They had won the race. 2He has seen two bulls this morning. 3They are buying a new house this afternoon. 4Paul has sold his two cars. 5They found two fossils of mammoth

Answer 1

1:  The race was won by them
2: This morning he had seen two bulls 
3: This afternoon they are buying a new house
4: His two cars were sold  by Paul
5: Two fossils of mammoth were found by them