My parents __________ (recently/buy) a summer cottage in the south of France
have recently bought (present perfect simple)
Andy is going to a concert tomorrow night. He _______ (look forward) to it all week.
has been looking forward (present perfect continuous)
When Bill Gates ______ (found) Microsoft, he was only 20 years old. He ________ (already / write) his first computer programme seven years earlier.
founded (past simple) / had already written (past perfect simple)