句型转换（5小题，每题1分，共5分）
I really don’t know what I should eat for breakfast. (改为简单句)
I really don’t know __________ __________ eat for breakfast.
My sister Linda watches three hours of TV in the evening. (对划线部分提问)
_________ _________ TV does your sister Linda watch in the evening?
The audience screamed excitedly when David Beckham appeared on the stage.
(保持句意基本不变)
The audience screamed _________ _________ when David Beckham appeared on the stage.
People hold the World Cup every four years. (改为被动语态)
The World Cup __________ __________ every four years.
If you don’t take more exercise every day, you will be much fatter. (改为祈使句)
__________ _________ exercise every day, or you will be much fatter.