按要求转换下列句式

1．We have already heard the exciting news．(改为否定句)

We             heard the exciting news                 .

2．Young people should speak to the old politely．(改为被动语态)

The old                                             by the young people politely．

3．What are you going to do? Could you tell me? (将两句合并成一句)

Could you tell me what                              going to do?

1、1．haven’t；yet  2．should be spoken to  3．what you are