Look , read and write.(看图补充句子。)
1. -- What are they doing? -- They are ________English class.
2. -- My birthday is on April 20th. --It’s the ________ (第二十)day of April.
3. If you are walking on a bridge. You must__________________.
4. _____________________________ ball is it? It’s mine.
5. This is ______________________________bike.