You are twenty-one, a grown-up young lady old enough to make up your own mind.
你已經21歲了,已經到了可以自己做主的年齡了。
What shall I give him for his Easter?
我要給他什么東西作為復活節禮物?
The administrative overheads of a business are low to the extent that everyone working in the business can be trusted to behave in a way that best promotes the interests of the firm.