--_____ that China has the largest number of mobile phone us

--_____ that China has the largest number of mobile phone users.
--I believe so.It seems everyone has one.
A.Someone said B.They told me C.It is said D.I was told
--More an more people in Beijing are learning English _____ they can better serve the 2008 Olympic Games.
A.because of B.so that C.even though D.as if