1 . He spent too much time talking on _______ phone while we were all busy at _______ work.

A．the; /

B．a; /

C．/; /

D．the; the

2 . Despite the warm personal relations with Hu, Bush admitted that ___ differences remain between the two countries, which makes ____ dialogue imperative.

A．the; a

B．the; /

C．/; a

D．/;/