[例1]Fix the post______in the ground.
A.firmed B.firmly C.firmingly D.firm
【解析】答案D。firmly意味“堅固地，頑固地”，在此句中不妥，firm意為“穩固地，牢固地”，合乎題意要求。句意：把這個樁子牢固地釘在地上。
[例2]Communism can never be taken as the equivalent of eating______and riding______.
A.free；free B.freely；freely C.free；freely D.freely；free
【解析】答案A。free意為“免費地”，freely意為“自由自在地，不受約束地”。句意：共產主義決不能理解為白吃飯和免費乘車。
[例3]The desk was______in the center of the room.
A.direct B.directed C.directing D.directly
【解析】答案D。題意：書桌剛好在屋子中央。
[例4]He is very___about his chance of winning a scholarship this year.
A.optimistic B.optional C.outstanding D.obvious
【解析】答案A。optimistic 樂觀的，有信心的，optional可供選擇的，outstanding 傑出的，obvious明顯的。本句的意思為：他對取得今年的獎學金很有信心。
[例5]The secretary asked______to write their questions on a piece of paper and send it to the front.
A.the present members B.the members presently
C.the members present D.the presently members
【解析】答案C。present作後置定語修飾the members意思為在場的成員。
[例6]When she got her first month salary，Alice bought______dress for her mother.
A.a cotton blue expensive B.an expensive blue cotton
C.a blue expensive cotton D.a cotton expensive blue
【解析】答案B。多個形容詞修飾名詞時，其順序為：限定詞-數詞-描繪詞-（大小、長短、形狀、新舊、顏色）-出處-材料性質，類別-名詞。
[例7]The Dongfeng company has produced______it did last year.
A.twice more trucks as B.twice as many trucks as
C.twice as much trucks as D.as twice many trucks as