Is the ball under the table?(作否定问答) This is my nIs the ball under the table?(作否定问答)This is my new computer.(改为一般疑问句)

问题描述:

Is the ball under the table?(作否定问答) This is my n
Is the ball under the table?(作否定问答)
This is my new computer.(改为一般疑问句)