_______you know this pretty girl?

 --Is there an English book in your bag?--______. It’s a Chinese book.

. Reading books is very important for developing the students’ understanding of the world, _______?

---John and Tom, you two clean the classroom today, _____? ---But we cleaned it yesterday.

—Your father likes chicken. _______ your mother _______ it, too?—Yes, she _______. She also likes meat.