—Cindy,is this your backpack?—Yes,t____ you.

—Cindy,is this your backpack?—Yes,t____ you. Is this your backpack?选择：1、Yes,this is2、No,itis not3、Yes,it 选出并改正下列各句中的一处错误. ——A.（Hello）Is this B.(your) backpack? ——Yes ________________?(your,backpack) yes,it is . Is this your pencil?Yes,t( )you is this your backpack?翻译成中文 以下句子变成复数句Is this your ruler?yes,it is.It's his backpack.What Is your pen?—Yes,it is.不能用Yes,this is. Is this your c---- g-----?Yes,it is.thank you. Is that your backpack?Yes,it's ___ backpack.A his B her C my Jane,is this your dictionary?Oh,yes,什么 you! Is this Mike is backpack的答语是yes this is吗