从ABCD四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
1．In face of failure, it is the most important to keep up good state of mind.
A. a; 不填 B. 不填；a C. the ; 不填 D.不填; the
2．It is on October 1,2009 that the People’s Republic of China ____ its 60th birthday.
A. congratulated B. kept C. remained D. celebrated
