1.—Tony, I really appreciate your wonderful performance in the concert.
       —_________.
       A.I've practiced for ages                      B.Well, it's just so-so
       C.No, I don't think so                         D.Thank you very much
2.In       18-minute address to students across America on September 8, 2009, President Obama told American students to make          most of their education.
       A.an; the                B.an; a                  C.the; the               D.the; a