You can't go to the company to work today (you can't go to the school to attend class today), tell your manager (teacher) why.
Write a note to tell them in a polite way and also mention when you can go back. Make sure to use these words:
Finish the practice both by handwriting and typing.
Try to use only vocabulary that you've already learned, especially the ones in this lesson or this unit.
*Optional* Share your work with us in the comment discussion section.
"Practice" is our new feature to encourage learners to speak out and put the language into use, especially in a self-study setting. "Skills like speaking a new language can only be developed through practice." Keep it up!