It was hot, so my mother opened the door. if it hadn't been hot. a) my mother didn't open the door b) my mother wouldn't have opened the door. c) my mother will not open the door

B)my mother  wouldn't have opened the door.

In the 1970s new tv technologies were  developed. a lot of tv programmes are devoted to politics. in the future new tv stations will be built in russia. i am sure the best tv films will be shown next year. television is used for many purposes. the is known as the best non-commercial television system. television signal is sent from a central source and received by home tv sets. more and more people will be touch with the help of television in the future. our lives will be dominated by television in the future. we hope that more good films are watched by young people.