Sometimes they may play to passers-by in the street or subway so that they can earn some______ money for themselves or to pay for their instruments.
Could I speak to__________ is in charge of International Sales ,please?
The traditional view is ______ we sleep because our brain is “programmed” to make us do so.
______ he referred to in his article was unknown to the general reader.
____ matters most in learning English is enough practice.
I just wonder __________ that makes him so excited.