5) 1. Tom often plays football with his friends. 2. I'll invite my relatives to come to my place next week. 3. The teacher asked us a lot of questions yesterday. 4. They're going for a walk at the moment. 5. Ann has already had breakfast.
6) 1. Become - became - become. 2. Draw - drew - drawn. 3. Go -went - gone. 4. Meet - met - met. 5. Set - set - set. 6. Take - took - taken. 7. Buy - bought - bought. 8. Choose - chose - chosen. 9. Find - found - found. 10. Know - knew - known.
7) 1. - a. 2 - b. 3 - a. 4 - c. 5 - c. 6 - b. 7 - b. 8 - c. 9 - b. 10 - a.