The boy is Mr. Smith’s ________ son.
I find _______difficult to finish the work on time. We only have three hours left.
If you want to know the meaning of the word______, you’d better look it up in the dictionary.
--______are the Olympic Games held?--Every four years.
She is a ________ girl. Everyone in our class likes her.
Liu Wei, the armless pianist, won the final of China’s Got Talent ________October 10, 2010.