4．The children had a good time in the park.

　　____ the children ____ a good time in the park?

3．The boy does some housework at home.

　　____ the boy ____ ____ housework at home?

2．She's never helped others.

　　____ ____ never helped others?

1．Everybody is in the classroom.

　____ ____ in the classroom?

30．I think he'll be back in a minute.

　I ____ think he ____ be back in a minute.

Ⅲ．将下列各句变成一般疑问句：

29．She did some shopping yesterday.

　　She ____ ____ ____ shopping yesterday.

28．There's somebody at the door.

　There's ____ at the door.

　There ____ ____ at the door.

　There's ____ ____ at the door.

27．There's something wrong with my bike.

　There's ____ wrong with my bike.

　There ____ ____ wrong with my bike.

26．All of them are hard workers.

　　____ of them is a hard worder.

25．Both these books are useful.

　　____ book ____ useful.