阅读下列各小题，根据汉语提示，用句末括号内的英语单词完成句子，并将答案写在答题上的相应题号后。

1.__________________ that you may have made the wrong choice?（occur）

你是否曾经想到过也许你做出的是错误的选择？

2.The explosions at the Boston Marathon are reported __________________ and over a hundred injuries. (cause)

据报道，波士顿马拉松爆炸事件导致了三人死亡和一百多人受伤。

3.He has given us several phone calls, ___________________ his sincerity and determination. (convince)

他给我们打了好多通电话，这让我们相信了他的真诚和决心。

4.Before becoming prime minister, Mrs Thatcher ____________________ several cabinet posts. (occupy)

在成为首相之前，撒切尔夫人已出任过好几个内阁职位。

5.________________ in the investigation was a great shock for everybody. (confirm)

调查中所证实的事情让每个人大吃一惊。

6.Tom opened the door, and there _________________ who he had seen twice. (stand)

汤姆打开门，门口站着一个女孩，他曾见过两次。

7.His desire that __________________ actually keeps everybody away from him. (obey)

他想要每个人都顺从他，事实上却使得每个人都远离他。

8.It was not until months later _________________ living all alone without family and friends around. (adapt)

直到数月之后他才适应了没有家人和朋友在身边独自生活。

9.The more he insisted he was innocent, ________________ believe him. (seem)

他越坚称自己无辜，他们似乎越不相信他。

10.In those rough times mistakes, which _______________, were crowding in at the same time and my life was totally messed up. (avoid)

在那些诸事不顺的日子里，本可以避免的错误全都同时发生了，我的生活完全一团糟。

完成句子（共7小题，每空0.5分，满分10分）

71. 如果你想知道如何翻译这个句子，你最好查字典。

If you want to know how to translate this sentence, you had better ______  ______ a dictionary.

72. 努力提高工人的工作条件是值得做的事情。

It is _______ to_______ working _______ for factory workers.

73. 很明显，他在尽力屏住呼吸。

It was _______ that he was trying to ______ his ______.

74. 他已经负债很久。对他来说，如何谋生成了个大问题。

He has been ______ ______ for a long time. How to earn ______ _______   is a big problem.

75. 既然我们已经完成了设计，就该轮到公司进行建设了。

_______ _______ we have finished the design, the company in its turn, will do the _______.

76. 她的衣着和行为证实了我的猜想——她确实很富有。

Her clothes and behavior _______ my guess ______ she was quite wealthy.

77. 使用过多的化肥导致了严重的问题。

_______ too much chemical fertilizer ______ ______ serious problems.