a. They are in business.
b. They are going to have a meeting and at night they have a dinner at the restaurant hotel.
c. He is a sales manager of the Chicago’s company.
a)they going to a conference.
b)they are going to a meeting.
c)he is their boss.
Oi Lilian, legal saber que vc está aproveitando os cartoons!
E obrigada 
Puxa!
Estou amando esses cartoons que você tem feito. Tenho sempre utilizado suas sugestões em minhas aulas e/ou avaliações.
Parabéns! Você é muito criativa!!!
a)to enjoy their vacations.
b)to meet the city and their turistic atractions.(?)
b)their cousin.
a)they’re to enjoy their vacations.
b)they go to a farm.
c)he’s their cousin.
a) They are in Chicago to buy a new vessel.
b) Today they will participate in a public sale.
c) Owner of travel agency.