——May I help you? You seem to be having some problems.—— , thanks. I think I can manage.
______ he referred to in his article was unknown to the general reader.
____ matters most in learning English is enough practice.
Some children want to challenge themselves by learning a language different from ______ their parents speak at home.
______ was most important to her, she told me, was her family.
_____ is known to us all is that the 2008 Olympic Games will take place in Beijing.