
1. formal
2. memo
3. informal
4. fax
5. interoffice
6. cc
7. business letter
8. Outside
Объяснение:
1. That hill is too high to climb.
2. We must find a solution to the difficult problem,
3. I asked you a question. What is your response?
4. The rain formed puddles on the road.
5. Do you appreciate the thought that went into the gifts you got?