19.About______ of Stockholm’s cars and buses run____ biogas.No wonder it was named the “greenest” ci
問題詳情
19.About______ of Stockholm’s cars and buses run____ biogas.No wonder it was named the “greenest” city in 2010. (A) quarters-three；by (B) three-quarters；on (C) one-quarters； on (D) quarters-one；with