句形转换。
1. It's time for games. （写同义句）
It's time __________ _________ games.
2. Which is your favourite food? （写同义句）
Which food do you _________ _________?
3. It takes him half an hour to draw a bird. （写同义句）
He ________ an hour _________ a bird.
4. Simon is from America. （写同义句）
Simon _________ from America.
5. They go to school by bike.（提问）
_________ _________ they go to school?
6. I want to be a teacher when I grow up.（提问）
_________ do you want to _________ when you grow up.
7. He does exercises every morning. (改否定句)
He _________ __________ exercises every day.
8. Her mother always has noodles for lunch. （提问）
__________ does her mother _________ for lunch?
四种元素中，最高正化合价数值最大的是P