busy的副詞形式怎么寫

　　The two saleswomen were busily trying to keep up with the demand.

　　這兩個女售貨員正忙著盡力滿足顧客的需求。

　　His colleagues, meanwhile, were busily scheming to get rid of him.

　　與此同時，他的同事在加緊謀劃擠走他。

　　Digging busily with teeth and claws, they opened the little door and slipped in.

　　他們用牙齒和爪子使勁地挖著，打開小門溜了進去。