1 . 积极地
witty adj. 诙谐的,风趣的activelyadv. 积极地,活跃地questioning adj. 好问的
2 . 活跃地
active 活动的actively活跃地activise 使活动
3 . 主动地
Because of their undersea (海面下的) environment, whales and dolphins must actively(主动地) decide when to breathe.21ST, Breathing while sleeping 21.