A:杜鲁门主义
B:马歇尔计划
C:两极格局
D:北大西洋公约组织
Millie's father found ______ last month.
We haven't seen her for many days and there is ______ for her safety.
某学生书包中有三枝红铅笔,两枝黑铅笔,一支白铅笔,它们的形状、大小一样,从中任意摸出一枝,那么摸到白铅笔的机会是( )
English is __________ but __________.