单词拼写（根据所给的中文提示，写出形式和意义都正确的词，共5小题，每小题1分，满分5分）
We follow the _______________（原则）of peaceful coexistence.
They have agreed to_______________（参与）in the forthcoming Beijing Tennis Open Tournament.
Man is a flexible animal, a being who gets_______________ （习惯于）to everything.
The children waited patiently in _______________（期望）of the magician.
She had _______________（自愿）entered that chilling world of long silence.