What's this sentence？
Open your book.
What's this sentence？
Work with a partner.
What's this sentence？
That's right.
What's this sentence？
Look at the picture.
What's this sentence？
Put your hand up.
What's this sentence？
What does this mean?
What's this sentence？
Listen.
What's this sentence？
Sorry, I don't understand.
What's this sentence？
Close your book.
What's this sentence？
That's wrong.