Instructions: To move to the next slide, click on the current slide or forward button. You can use pencil by clicking on pencil icon. During the lesson, you can click Volume icon to mute or unmute sound. Besides, you can zoom, print the lesson. Some lessons have attachment file or notes.
English Grammar In Use
Unit 14 - Present Perfect and Past (2)
- Category: English Grammar In Use
- Hits: 5876