Sure! Here’s how you could complete the online chat and other exercises based on the prompts:

**Exercise 5: Use the prompts to complete the online chat**

Clareky: Hi Dan, how are you?
DANZ: Gr8!
Clareky: You weren’t online yesterday. Did you have (you/have) a busy day?
DANZ: Yes, (1) I did! (I/do) I studied all day!
Clareky: Wow! (2) Did you finish (you/finish) the homework?
DANZ: No, (3) I didn’t (I/do). It was difficult, (4) I couldn’t (you/understand) it all.
Clareky: No, I (5) didn’t (not/understand) it. I sent you an email. (6) Did you check (you/check) your emails yesterday?
DANZ: Yes, (7) I did (I/do). I sent you a text message, (8) Did you read (you/read) it?
Clareky: No, (9) I didn’t (I/do). Sorry, I lost my phone last week.

---

**Exercise 6: Rearrange the words to complete the sentences.**

1. Alexander Fleming discovered (discovered) antibiotics.
2. Les Paul (developed) the electric guitar.
3. Dr Martin Cooper (invented) the mobile phone.
4. Jean Nouvel (designed) the Louvre museum in Paris.
5. The Ancient Egyptians (built) the Pyramids.

---

**Exercise 7: Complete the text about Professor Fess with the correct form of the words below.**

This is Professor Fess - thinks he’s genius. He always has new ideas and he loves inventing things. Last year he (1) **designed** his own eco car and his friend Mikey the mechanic (2) **built** it. Professor Fess says he is also (3) **discovering** a new green energy source in the Amazon rainforests. Now he wants to (4) **develop** a way for everybody to use this new energy.

---

**Exercise 8: Match the question words 1-7 with the questions a - g.**

1. Where - d. did the Ancient Egyptians build?
2. How many - c. did Alexander Bell invent the telephone?
3. What - a. discovered electricity?
4. Who - f. is Leonardo da Vinci famous?
5. Why - g. paintings did Leonardo da Vinci complete?
6. When - b. did Einstein live? In Germany.
7. How - e. did people communicate before the invention of the Internet?

Feel free to ask if you need further assistance!