free的对应词是busy，表示忙碌的、热闹的、正被占用的。
例句
My goodness, you have been busy!
天哪，你一直在忙！
Were not always this busy!
我们并不总是这么忙！
The doctors are brusque and busy.
医生们十分忙碌，说话简短生硬。
The house is on a very busy road.
房子位于一条交通非常繁忙的公路旁边。
He\'ll be busy for ages yet.
他还要忙很长一段时间。
Are you busy next Monday ?
下周一你忙吗？
