1 . Even after the Olympics, ________ growth of the Beijing Subway has continued, and there will be 19 lines in total in the coining few years.（用适当的词填空）

2 . —Tom,I'll invite you to have ________ lunch after playing ________ violin.
—Thank you.

A．a; the

B．the; the

C．a；不填

D．不填；the

3 . The government is to throw ________ light on the new policy aimed at helping ________ unemployed on TV tomorrow.

A．the; an

B．/; /

C．a; the

D．/; the