บทสนทานาต่อไปนี้ใช้ตอบคำถามข้อ21-24

Susan: You look worried. ___21___?
Anna: l've got to many things to do right now, l have to hand in an English essay tomorrow, which 
          l haven't even started. But this evening, l have to ge togeher with my group to prepare
         for our Thai presentation. ___22___.
Susan: The Thai presentation's tomorrow morning, too?
Anna: Yes, that's why l'm worried. ___23___.
Susan: Why don't you start writing now, and join the group in the evening?
Anna: But if l don't finish, ....
Susan: You can come back to your essay after working with you friends. ___24___?
Anna: Good. Thanks . Why didn't l think of that?

 Choose the best answer.