There is( )"o"and( )"f"in the word"of"A.a;an B.an;a C.a;a D.an;an

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There is( )"o"and( )"f"in the word"of"A.a;an B.an;a C.a;a D.an;an
There is( )"o"and( )"f"in the word"of"
A.a;an B.an;a C.a;a D.an;an

There is( )"o"and( )"f"in the word"of"A.a;an B.an;a C.a;a D.an;an
B