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.

句型转换

完成B、C、D句，使其与A句意思相同或相近。（每空一词）

A．Not only does he have a flat in London．he also has a villa(别墅)ill Italy and a castle in Scotland.

B．_____ _____ _____ his flat in London, he has a villa in Italy and a castle in Scotland.

C．_____ his flat in London, he has a villa in Italy and a castle in Scotland.

D．_____ _____ his flat in London, he has a villa in Italy and a castle in Scotland.

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.