Teachers always have found that teaching and learning become interesting and enjoyable when students are actively involved in the lesson. Their active engagement, however, does not come automatically. In most cases, teachers have to find ways to get them  小题1:______(involve).    
Hai K. P. Huynh, an English teacher at American-Vietnamese International English Centre in Da Nang, Vietnam, demonstrates小题2:______ teachers can get students actively engaged in the learning process and take charge of their learning by giving them the opportunities to find and correct mistakes小题3:_____.
The effective way is to prepare an activity 小题4:_____ students take over the role of correcting mistakes which is normally done by the teacher. The teacher purposefully becomes the ‘mistake maker ’.
This technique can bring forth several benefits. For instance, by switching the role of the ‘mistake corrector’, the teacher can often observe that students get excited. The degree of excitement小题5:_____ (increase) when the class is divided into two teams to compete with each other in finding and correcting the mistakes.
Another benefit is that they have the opportunity to identify the possible mistakes themselves instead of the teacher 小题6:_____(tell) them what the mistakes are. This technique can help the teacher check his or her students’ understanding of a grammar point or comprehension of a reading task. It can be used to reinforce and improve their production skills such as writing and pronunciation.
The activity is a simple technique小题7:____ it is very effective小题8:____ getting students' attention and participation. It can easily be developed 小题9:______(satisfy ) teachers’ needs.