问题描述：
Popular music in America is _what every student likes.
1.Popular music in America is _what_____ every student likes.
that ,how,what ,when
2.They make a CD or tape which radio stations use in every state.
which ,what ,where ,how
就想知道原因.为什么别的不能选
1.Popular music in America is _what_____ every student likes.
that ,how,what ,when
2.They make a CD or tape which radio stations use in every state.
which ,what ,where ,how
就想知道原因.为什么别的不能选
问题解答：
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