Tom got addicted to chatting and playing e-games on the net, which made his father ________.

Which of the following is not suitable?

A．on cloud nine

B．hot under the collar

C．feel blue

D．down in the dumps

弥补财政赤字的主要经济来源应为( )。

A．向银行借款
B．税收
C．向银行透支
D．举债