21. As we know, _____life is a drama, in which ______things of all kinds may take place.
A. /; / B. the; / C. the; the D. /; the
22. —Hi, John! I’m going to Greece for my holiday．
—Greece? A splendid country, ______ well worth visiting．
A. it B. one C. which D. that
A. considerate B. constant C. typical D. unique
