Sit on the desk,please.如何改为否定句

Sit on the desk变为否定句 sit at desk 和sit on the desk有什么区别 Look!The boy ____(sit) on the desk Sit on the desk,please.如何改为否定句 用sit on the desk和 smile 造句 --------[ not sit ] on the desk ..l --------[not have] a watch ,what,s the time ,please? 英语肯定变否定把Sit on the desk ,please 改为否定 Donot sit on the desk错了吗,错在哪 plea se sit down 翻译成中文. ( )the baseball on the desk? 翻译sit on the floor 请问sit on the committee On the desk、英语是什么意思 what's on the desk? there_____any books on the desk. they're on the desk. peter is （ ）good friend.we are （）（）.l am kitty.l am a（）.the desk is dirty（）the desk plea（）.the desk is dirty（）the desk ,please.is this a（）bee?急用 填介词 We shouldn't sit ()the desk. We should sit ()the chair.