Do you often chat_______ your friends_______ the Internet?
你手里拿着一张字母卡片问别人时,应说: __________________
当你的老师向你介绍一位新同学时,你应对你的新同学说:________________________
当别人夸奖你的衣服漂亮时,你应说: ______________________
The desk is blue .The chair is _______ ,too.
---- Please sit down. ----- _____________.