maybe he knows the story(同义句转换）

He will play basketball tomrrow(用 the day after tomrrow改为选择疑问句）
1. Will he play basketball the day after tomorrow?
He is going to be a basketball player(改为否定句）
2. He is not going to be a basketball player.
或者 He will not become a basketball player.
He found it difficult to get to sleep(用it做主语进行同义句转换）
3. It is difficult for him to get to sleep.
Do you mind if i open the window?(做肯定回答）
4. No. Of course not.
现在严重吗?用英语怎么说啊
5. Is it serious now?