Many of the earth’s plants and animals have already ______ and several other species are endangered．

       A．died away           B．died out       C．died down     D．died of

You’d sound a lot more polite if you make a request _____ a question．

       A．in search of          B．in the form of      C．in need of    D．in the direction of

Frank put the medicine in a top drawer to make sure it would not be _____ to the kids．

       A．accessible            B．relative            C．acceptable    D．sensitive

Compared with his sister, Jerry is even more ______ to, and more easily troubled by, emotional and relationship problems．

       A．sensible      B．addicted            C．available       D．sensitive

John is very _____ --- if he promises to do something he’ll do it．

       A．independent         B．confident      C．reliable      D．flexible

My uncle’s house in the downtown area is much smaller than ours, but it is twice ____ expensive．

       A．as             B．so        C．too       D．very

It seems that living green is _____ easy and affordable．A small step makes a big difference．

       A．exactly        B．fortunately          C．surprisingly         D．hardly

I’m sure that your letter will get ______ attention．They know you’re waiting for the reply．

       A．continued            B．immediate           C．careful              D．general

The income of skilled workers went up．______, unskilled workers saw their earnings fall．

       A．Moreover            B．Therefore            C．Meanwhile          D．Otherwise

Martin Luther King Jr．was _____ the Noble Peace Prize of 1964 for advocating nonviolence policy in the movement for civil rights．

       A．awarded             B．offered             C．rewarded            D．received