题目内容
20．To our surprise，they managed _____ the task within three hours．（ ）| A． | finishing | B． | finish | C． | to finish | D． | finished |
分析 使我们惊讶的是，他们设法在三小时内完成了任务．
解答 答案：C．
根据To our surprise，they managed _____ the task within three hours，可知使我们惊讶的是，他们设法在三小时内完成了任务．这里manage to do sth表示设法做成某事，故选C．
点评 本题考查非谓语动词的用法，抓住句中的关键词并联系相关的语法知识可得出正确的答案．平时注意对此类短语或句式用法的总结与归纳．
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