英语选择题The kids spend a lot of time in watching TV when their mothers are busy ____ the housework.A in B on C at D with
问题描述：
英语选择题The kids spend a lot of time in watching TV when their mothers are busy ____ the housework.
A in B on C at D with
答
with，作宾补
答
A be busy in doing sth
答
A、解释是：be busy with sth、be busy in doing sth（in可以省略）是固定搭配!
答
D with
词组be busy with sth 忙于做某事