BIM定義包括哪三個(gè)層次 ()
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George: Do your parents allow you to stay out late at night May: No, I am not allowed to stay late at night.George: What are you doing tonight May: ___________
George: Do your parents allow you to stay out late at night May: No, I am not allowed to stay late at night.George: What are you doing tonight May: ___________
A.I am reviewing my lessons.B.I review my lessons.C.My lessons reviewing.