ls this new calculator _____?

ls this new calculator _____? 英语ls this your ls this your ls this the ls this your school? ls this ( ) english book?( )中填啥? ls this a picture是什么意思 ls++this++your++school是什么意思 ls this...for...怎么填 ls your new teacher friendly--------you ls. ls this question easy 的意思是什么? ls this question easy?的回答是什么 ls this your computer?改为肯定陈述句 ls this a bus复数句 this certificate ls presented中文意思是什么? ls this your schoolbag的中文是什么 ls this your eraser?做出否定回答