John, _______ university professor, is c
题型:选择题
问题:
John, _______ university professor, is considered to be _______ success as ______ expert in the agriculture research.
A.a; a; an
B.an; / ; an
C.the; /; an
D.a; the; an
John, _______ university professor, is considered to be _______ success as ______ expert in the agriculture research.
A.a; a; an
B.an; / ; an
C.the; /; an
D.a; the; an