题目内容
He has _____ i-phone and now he is reading _____ useful e-book on it.
A. a;a B. the;a C. an;a D. an;the
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题目内容
He has _____ i-phone and now he is reading _____ useful e-book on it.
A. a;a B. the;a C. an;a D. an;the