他疯狂地挥舞着手臂，好像发现了什么惊天秘密。

He waved his arms ___maniacally, as if he had discovered some earth-shattering secret.

她疯狂地练习钢琴，每天弹奏超过十个小时。

She practiced the piano ___maniacally, playing for more than ten hours every day.