Question

now use the active structure to rewrite the sentences below the first one is done for you ;

the light bullb was invented by thomas edison
R;
the museum has been visited by millions of people
R;
the e-mails could be sent by the secretaries
R;
cocoa butter is made up of cocoa chocolate and millk

Answer 1

Thomas edison has invented the light bullb.
Millions of people has visted the museum.
The secretaries could send the e-mails.
Cocoa chocolate and milk makes cocoa butter.