根据下列各句意思及所给单词的首字母或汉语提示，写出该单词的正确形式。

1.I hope this summer holiday will be _____________(有益的) to your study.

2.He was the only _____________( 目击者) of the accident, who would give important information.

3.Statistics _____________(表明) that the world population has doubled.

4.Tom was ___________(推选) chairman, for he is hardworking and responsible.

5.Can you _____________(推荐) a good dictionary to me ?

6.I wonder if you’ll c_________________ them all on their success.

7.She had a strong d_______ to go abroad for further study.

8.He was a_________ of wind in his face.

9.All the students p_______________ in cleaning the street.

10.He o________ his success to the good education he received.

Barack Obama is one of the most powerful people in the world.
In a speech, he o     his success to those hardships he went through: “I was nobody at first, but I wanted to make a d    . I learned the ______(精神) of perseverance(坚持不懈) from people around me. L       a hard life, my mom struggled to put herself through school, and make ends m    . My grandmother kept doing her job as well as she could and ended ______ being vice president at a bank. ________ you do, remember that making your mark on the world is hard. Be patient and determined, r       of the setbacks and failures you may _______ across in achieving success. No one of achievement has________(躲避) failure. They learn from mistakes and don’t quit.”               

Barack Obama is one of the most powerful people in the world.

In a speech, he o      his success to those hardships he went through: “I was nobody at first, but I wanted to make a d     . I learned the ______(精神) of perseverance(坚持不懈) from people around me. L        a hard life, my mom struggled to put herself through school, and make ends m     . My grandmother kept doing her job as well as she could and ended ______ being vice president at a bank. ________ you do, remember that making your mark on the world is hard. Be patient and determined, r        of the setbacks and failures you may _______ across in achieving success. No one of achievement has________(躲避) failure. They learn from mistakes and don’t quit.”               

根据下列各句意思及所给单词的首字母或汉语提示，写出该单词的正确形式。

76. I hope this summer holiday will be _____________(有益的) to your study.

77. He was the only _____________( 目击者) of the accident, who would give important information.

78. Statistics _____________(表明) that the world population has doubled.

79. Tom was ___________(推选) chairman, for he is hardworking and responsible.

80. Can you _____________(推荐) a good dictionary to me ?

81. I wonder if you’ll c_________________ them all on their success.

82. She had a strong d_______ to go abroad for further study.

83. He was a_________ of wind in his face.

84. All the students p_______________ in cleaning the street.

85. He o________ his success to the good education he received.

  阅读下面短文，根据以下提示：1）汉语提示；2）首字母提示；3）语境提示，在每个空格内填入一个适当的英语单词，并将该词完整地写在右边的横线上。所填单词要求意义准确，拼写正确。

Barack Obama is one of the most powerful people in the world.

In a speech, he o      his success to those hardships he went through:            1._______

“I was nobody at first, but I wanted to make a d     . I learned                      2._______

the ______(精神) of perseverance(坚持不懈) from people around me.        3._______       

L        a hard life, my mom struggled to put herself through               4._______

school, and make ends m     . My grandmother kept doing her job           5._______

as well as she could and ended ______ being vice president at                          6._______

a bank. ________ you do, remember that making your mark                  7. _______

on the world is hard. Be patient and determined, r        of                 8. _______

the setbacks and failures you may _______ across in achieving                9. _______

success. No one of achievement has________(躲避) failure.                  10. _______

They learn from mistakes and don’t quit.”