3．
(1)Police in America have _________ _________（加紧）their search for a fifteen-year-old boy who went missing three days ago in Dover, New Hampshire.
(2)We will not give up until we _________ _________（弄清楚）what happened.
(3)You have to wear a helmet and a life jacket _________ _________（用于保护）, just in case you fall into the water.
(4)In this peaceful land, people live _________ _________ __________ _________（十分和谐相处）nature, far away from the noise and worry of the outside world.
(5)If _________ _________（被吸入）, they can result in illness or even death.
(6) The room is _________ _________ _________（一片混乱）, with pizza boxes on the floor and dirty dishes in the sink.
(7)Why didn’t they ask me what happened _________ _________（而是）shouting at me?
(8)Boys and girls _________ _________（倾向于）be different in this regard.
(9)I’m now in hospital _________ _________（从…中康复）liver failure.
(10)We shouldn’t _________ _________ _________（对…感到羞愧）the way we look, should we?