These plastic flowers look so _____ that many people think they are real.

A. beautiful    B. natural    C. artificial    D. similar

Because of the strong sun Mrs. William's new dining room curtains _____ from dark blue to gray within a year.

A. faded    B. fainted    C. paled    D. diminished

If the boy had _____ the dog alone it wouldn't have bitten him.

   A. set    B. left    C. had    D. put

. Your help is _____ for the success of the project.

   A. indispensable    B. indicative

   C. inevitable       D. inherent

. What you have done is _____ the doctor's orders.

   A. attached to        B. resistant to

   C. responsible to     D. contrary to

Although it is not our normal _____ to give credit, this time I think we should consider the matter more closely.

   A. state                    B. intention                    C. occasion                    D. practice

This book gives a brief _____ of the history of the castle and details of the art collection in the main hall.

        A. outline                    B. reference                    C. article            D. outlook

 He gave me some very _____ advice on buying a house.

A. precious    B. worthy    C. precise    D. valuable

. Don't _____ the news to the public until we give you the go-ahead (许可，准许).

   A. release    B. discard    C. relieve    D. retain

 His landlady gave him a week's _____ to leave the flat.

   A. threat    B. notice    C. advice    D. caution