For S1， listen and fill in the blank

　　T： OK， who want to have a try？

　　Ss answer and check.

　　T： Is it right？ Yeah let‘s check it now. Wow， you are so clever！ Now read after the tape.

　　Ss read and repeat. (group by group， four by four， roll by roll)

　　T： Very well， so why Daming didn’t do this things yesterday？