The teacher explains the terminology in conversations in difficult words, such as dumplings and then Ex.1 students think are mean by giving students back to see the conversation again.
The teacher explains difficult words in the dialogue in Ex.1 words such as dumplings, the students think it means anything. By allowing students to see the conversation again.
The teacher explained the difficult vocabulary in dialogue in Ex.1 such as "dumplings and students to think what you mean. By allowing students to look at the dialogue again.