Change the following sentences into the passive voice or active voice: 1. Does Egypt export cotton to many countries? 2. The Christmas tree were decorated and put at the front doors 3. Somebody must do something for these poor men 4. Did Jack London write the novel "Martin Idon"? 5. A new supermarket is going to be built next year 6. They have just built a new church near my house 7. People speak French and Enghlish in Canada 8. Bell invented the telephone in 1876 9. People say that he is the best doctor 10. His painting will be exhibited for the first time by New Arts Gallery