3. My grandparents came to visit us last week.
4. They have visited us every summer since I was born.
5. Sorry, Greg hasn't come to work today. Can I take a message ?
6. Sorry, Greg went out five minutes ago. Can I take a message ?
7. It's 11 a.m. - I received 25 emails this morning, most of them spam !
8. It's 6 p.m. - I have received 25 emails this morning, most of them spam !
