以下句子变成复数句Is this your ruler?yes,it is.It's his backpack.What is t_英语解答

以下句子变成复数句
Is this your ruler?
yes,it is.
It's his backpack.
What is this in English

人气：325 ℃　时间：2020-04-10 09:03:35

解答

are these your rulers
yes,they are
they're his backpacks
what are these in english?