1. Marina and Ivan are..at....Expo’20.
2. Anna Petrova is . . in. . . . the banking business.
3. Maxim works . . . .for . . an international financial company.
4. This gentleman is..in....charge...of...marketing.
5. Who is responsible . . .for . . . production?
6. Will you introduce me . . . to. . . your boss, please?
7. This is Mark Douglas...from...DPC.
8. The meeting starts...at..5 pm.
9. I study English three hours......a day.
10. She always sits . . . behind/next to/in front of/opposite. . . the vice president.