On the wall hung an overcoat, _______color is blue. whose B. of which C. which D. its
While income worry is ____ rather common problem of the aged,loneliness is another problem that ____aged parents may face.
Many people can not learn any lessons from the mistakes____they get hurt somehow.
Everyone has periods in their lives_______everything seems very hard.
— I can’t imagine Phelps smoking marijuana (大麻).—____.
— What a successful Spring Festival Gala (春晚)!Who said we couldn’t make it?—_____.