16. “To pull somebody’s leg” means ______.(      )

A. to prevent somebody from advancing

B. to make somebody difficult to move

C. to make trouble to somebody

D. to say something in a joking way

17. “I was not informed. Otherwise I should have taken some action” demonstrates ______ relation between the two sentences.(      )

A. an additive                                                   B. a temporal 

C. a persuasive                                                 D. a causal

18. The word in American English for “mosquito-net” is ______. (      )

A. drapery                                                       B. bar     

C. bedspread                                                    D. quilt

19. “A green Christmas” refers to ______. (      )

A. a Christmas with vigor and energy

B. a Christmas full of jealousy

C. a Christmas without snow

D. a Christmas with fruit and vegetables

20. The word in British English for “Faculty” is ______. (      )

A. department                                                  B. stuff  

C. staff                                                           D. teachers