Is this/that a/an?.. Yes,it is./no,it isn't.2Are these/those oranges?Yes,they are./No,they aren't.

Is this/that a/an?..这/那是..Yes,it is./No,it isn't.是的,它是./不,它不是.Are these/those oranges?这/那些是橙吗?Yes,they are./No,they aren't.是的,它们是./不,它们不是.