(        )33． The young man was often seen _______， by the lake．

(     )50．—could you take care of our dog while we are away?

              —__________

(    )49．—What about some drinks?

          —__________．

(    )48．—Mary，would you like to visit the science museum with me?

          —__________but surfing the net seems more interesting．

(      )47． —Excuse me，may I take a :;eat here?

             —________The man on the seat has already left．

(   )44． —Aren't you a student?

          —_________I study in No， 10 Middle School．

(    )45．—We have to get up at 7 : 15 tomorrow morning．

          —Yes．__________we will be late for the 7 : 40 train．

(        ) 46．—Let' s go shopping，shall we?

                —_________

(      )43. —__________． will the supper be ready? I'm very hungry．

            —In a minute．

(     )42． —I hear Yang Yan made an English speech at the graduation ceremony yesterday．

            —__________and____________ ．

41.—_________

—Oh，l feel bad． I think I had a headache ．