Ответ:

B The contract was sent to me by courier the next day.

C Our firm is being taken over by a multi-national company.

D The man trying to climb in the window was noticed by several people.

E David was awarded a medal for bravery by them.

F Sylvia was made by them to take the exam again.

G Paul was given the paintings by an elderly aunt.

H The case is going to be looked into by the police.

I Any further rescue attempts were considered pointless by them.

J George was elected president for a second term by them.