1. He’s responsible - ? - in for by international accounts.
2. I work - ? - for by out IBM.
3. I’ve been working - ? - for under in computers for seven years.
4. Julio deals - ? - for in with personnel.
5. Carlos is in charge - ? - for about of production.
6. David takes care - ? - of for about the machines.
7. The Sales Department is headed - ? - under by for Maria.