用不定冠词a和an填空.

用不定冠词a和an填空.1.Tom is _______ honest boy.2..I have _______ one—year—old sister.3.My grandmother told me _____ interesting story.4.Here is _____ photo of my family.5.I spend _____ hour from my school to supermarket.6.He is _____ European,but he can speak Chinese well.7.I like physics and I want to be _____ engineer.