单词拼写

根据句意、词首字母或汉语提示写出单词，注意单词形式。

71. After a close encounter with death, Timoteo Apaza realized that he was lucky to be alive, and felt it was his m______to help others.

72. Mark Twain’s vivid descriptions of life on the river quickly became popular and e________ the reputation as one of America’s greatest writers.

73. The Siberian tiger and the giant panda are both e______ species and need to be protected.

74.　 On the way to success we’ll meet a lot of difficulties. We need to learn to o________ them on our own.

75.　 A q________ teacher should be strict with his/her students.

76.　 The boy is c________ (好奇的) about everything that he sees.

77.　 He made a public ________(道歉) for the team's bad performance.

78.　 The ________(起源)of the festival is still unknown.

79.　 Hopefully she’ll understand and ________(原谅)you, if she really loves you…

80.　 Although I am a leader, I don’t think I should enjoy any p_____(特权).

No one can stop him,       the boy is determined to do something.

A.even if          B.once        C.now that      D.although

_____ the boy is determined to do something , no one can stop him.

A. Even if        B. Now that        C. Once       D. However

         , I believe, and you will find the boy is very outgoing．

The boy is ______ to leave home.