1．He has a brother and a sister.（改为否定句）
He have a brother a sister.
2．Let’s go camping this Sunday, ?（反意疑问句）
3．He was surprised to see the three men in the police office.（改为感叹句）
surprised to see the three men in the police office!
4．The teacher asked Tom to help with the work yesterday.（对划线部分提问）
What the teacher Tom to yesterday?
5．Can you tell me what kind of pet I should get?（同义句转换）
Can you tell me what kind of pet ?
6．The weight of the cow was 200 kilograms.（同义句转换）
The cow 200 kilograms.
7．Lily went to sleep and forgot to turn off the lights. （同义句转换）
Lily went to sleep the lights .
8．You can’t get there before 10 o’clock. （同义句转换）
It’s you to get there before 10 o’clock.
9．Kate is good at speaking English. Jack is good at speaking English，too.（合并成一句）
Kate speaks English Jack.