1 . One of the most impressive historical epic films, “The Battle at Lake Changjin”, _______ Wu Jing and Jackson Yee had played the lead roles, moved many filmgoers to tears.（用适当的词填空）

2 . It all began in 1877, ________ Thomas Edison made the first recording of a human voice on his invention, the record player.（用适当的词填空）