变一变 Are those oranges?(改为单数句） Is___ ____orange?2.This is a blackboard(改为复数句_ _ _
问题描述：
变一变 Are those oranges?(改为单数句） Is___ ____orange?2.This is a blackboard(改为复数句_ _ _
答
this a \there are many boards.
答
Is it an orange?
These are blackboards.
答
Is that an orange
These are blackboards.