试题题干
Fill in the blanks with an item as required.
With a coordinator:
The engineer worked day and night trying to find out the cause of the failure of the equipment,
eventually he succeeded.
参考答案
试题解析
本题考查连词的用法。空格前的一句话是在说“他一直寻找失败原因”，后面一句是说“他最终成功了”，两句话之间是递进关系，所以要填连词and。
句意：工程师日夜工作，试图找出设备故障的原因，最后他成功了。