— Did you listen to Li Yundi _____ the piano yesterday evening?
— Yes. He played _____ and all the audience clapped loudly at the end.
A:play; perfectly
B:play; perfect
C:to playing; perfectly
D:to playing; perfect
《农政全书》是一部集古代农业之大成并吸收了西方科技知识的农学专著。
2和____能合成4。