Health care must be at the service of all who need it.

　　醫(yī)療保健機(jī)構(gòu)必須為所有需要者提供服務(wù)。

　　Who was it that won the US Open?

　　在美國(guó)公開(kāi)賽上獲勝的.是誰(shuí)？

　　She made it her business to find out who was responsible.

　　她一定要查清楚到底該誰(shuí)負(fù)責(zé)。

　　Who could forget his speech at last year's party?

　　誰(shuí)能忘記他去年在聚會(huì)上的講話呢？

　　Who sets the standard for water quality?

　　水質(zhì)標(biāo)準(zhǔn)由誰(shuí)來(lái)制訂？