![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
请将下列句子单复数互换。 1. This is a butterfly. ___________________________________________ 2. Those are white sheep. ___________________________________________ 3. This is her child. ___________________________________________ 4. These apples are big. ___________________________________________ 5. That is a gray mouse. ___________________________________________