11.He invited all of his ______ to join his wedding party.
 e-in-arms            c. comrades-in-arm
 es-in-arms            d. comrade-in-arm

12.All the ______ in the hospital got a rise last month.
  doctors               c. woman doctors
  doctor                d. woman doctor

13.After ten years, all these youngsters became_____.
 -ups                     c. growns-up 
-up                       d. grown-ups 

14.The police investigated those _____ about the accident.
 r-by                 c. standers-by
 r-bys                d. standers-bys 
 
15.The Nazi kept those ______ in their concentration camp.
er-of-wars               c. prisoners-of-war
ers-of-wars               d. prisoner-of-war 
 
16.The manager was greatly appreciate that _____ made by Linda lately.
  reel    b. news reel    c. new-reels    d. news reels
 
17.Mary’s dress is similar in appearance to her ______. 
  a. elder sister    b. elder sister’s    c. elder sisters    d. elder sisters dress
 
18.All the people at the conference are ______.    
a. mathematic teachers   c. mathematics teacher atics teachers  d. mathematic’s teachers 
 
19.Professor Mackay told us that ______ of lead are its softness and its resistance.
  property         c. properties
  properties        d. property
 
20.Physics _____ with matter and motion.
   b. deals    c. dealing    d. are 
 
【答案解析】
  1-5 CADBB    6-10 BBCCB