短语讲解：
1. Students learn more, attend class at higher rates and are more engaged in their education when teachers take a more interactive approach in the classroom, according to a new study.
be engaged in忙于，从事于
例句：They are engaged in interior trade.
他们从事国内贸易。
2. Both classes were held in a theater-style room with fixed seats.
fixed seats 固定座位
例句：The 412 fixed seats were occupied;
四百一十二个固定座位坐满了
3. Instead, students were divided
