11. ?____? drills that have no real topic have to remain as they are.?
A. Manufacture B. Manipulative?
C. Manipulate D.Manifest?
12. This book has been in the works so long that I have lost ?____?of most of the sources found for me by the staff of the library.?
A. traceB. trailC. trackD. touch?
13. The elbows on your coat have worn thin, so I must ?____?them.?
A. mendB. patchC. repairD. pitch?
14. ?____? and wage increases have not kept in step.?
A. ProductionB. Product?
C. ProduceD. Productivity?
15. People under stress have performed ?____? feats of strength, like lifting an automobile off an accident victim.
A. specificB. extraordinaryC. abruptD. abnormal?
16. Modern appliances ?____? us from a good deal of household work.For instance, the dryer frees us from hanging the laundry.?
A.escapeB . benefitC. liberateD. comfort?
17. The audience waited in ?____? silence while their aged speaker searched among his note for the figures he could not remember.?
A. respectiveB. respectC. respectfulD. respectable
18. The disappearance of her paper has never been ?____?.?
A. counted for B. looked up?
C.accounted forD. checked up?
19. When he was asked about the missing briefcase, the man ?____?ever seeing it.?
A. refusedB. deniedC. opposedD. resisted?
20. Communication between a young couple is a(n) ?____?business.?
A. sharpB. dreadfulC. intenseD. delicate?