WRAP Russian president meets Chinese leaders

The video tutorial introduces the topic and provides a lesson on how to shampoo effectively.

In what context might the phrase 'He teaches to shampoo' be used?

• In a salon

• In a classroom

• In a workshop

• All of the above

What might be the significance of the duration mentioned in the text?

• It indicates the length of the lesson

• It shows the time taken for each topic

• It is irrelevant

• None of the above