l think he has a ping-pong ball.改为否定句是什么?
问题描述:
l think he has a ping-pong ball.改为否定句是什么?
答
l think he has not a ping-pong ball.改为否定句是什么?
l think he has a ping-pong ball.改为否定句是什么?
l think he has not a ping-pong ball.改为否定句是什么?