Read the passage and then write the antonym or synonym of the words as directed below :
(a) used (antonym); (b) smooth (antonym); (c) international (antonym); (d) prestige (synonym); (e) familiar (antonym); (f) educated (synonym); (g) modern (antonym); (h) knowledge (antonym); (i) trade (synonym); (j) continue (antonym); (k) whole (synonym); (l) highly (synonym); (m) realise (synonym); (n) important (synonym).