Изберите верный предлог.My father and I are ... business together.a)atb)inc)of

My father and I are in business together. Мой отец и я совместно занимаемся делом.

My father and I are not in business together. (Negative).

Are my father and I in business together? (General question).

Who is in business? (Special question).

Are my father and I or Tom and Mike in business together? (Alternative question).

My father and I are in business together, are not they? (Disjunctive question).

My father and I were in business together. (Past Indefinite).