单项选择题
It is strictly ______ that access to confidential documents is denied to all but a few.
单项选择题 The President fumed at questions of whether the nuclear summit and surrounding meetings were tailored to his political ______.
单项选择题 He sat ______ his head, trying to think of the answer.
单项选择题 The ______ of rain forests may hamper a developing country in its fight against poverty.
