[例1]Fix the post______in the ground.
A.firmed B.firmly C.firmingly D.firm
【解析】答案D。firmly意味“坚固地，顽固地”，在此句中不妥，firm意为“稳固地，牢固地”，合乎题意要求。句意：把这个桩子牢固地钉在地上。
[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意为“免费地”，freely意为“自由自在地，不受约束地”。句意：共产主义决不能理解为白吃饭和免费乘车。
[例3]The desk was______in the center of the room.
A.direct B.directed C.directing D.directly
【解析】答案D。题意：书桌刚好在屋子中央。
[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 乐观的，有信心的，optional可供选择的，outstanding 杰出的，obvious明显的。本句的意思为：他对取得今年的奖学金很有信心。
[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作后置定语修饰the members意思为在场的成员。
[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。多个形容词修饰名词时，其顺序为：限定词-数词-描绘词-（大小、长短、形状、新旧、颜色）-出处-材料性质，类别-名词。
[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