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。
小题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？
小题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。
小题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。
小题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。
小题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。
小题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。
小题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。
小题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。
小题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。
小题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。