Teachers should have a device in teaching. Instructors are not required to teach the happy. Students will be happy to use simple vocabulary students will understand and intend to study.
The teacher should have to teach. Teaching does not force teachers to be happy. Students will be happy Use simple words, students will understand and study hard.
The teacher should have the equipment in teaching. Don't force a happy teaching teaching students to be happy. Use simple vocabulary, students will understand and study hard.