英语翻译in a test consisting of 30 multiple-choice questions,3 m

in a test consisting of 30 multiple-choice questions,3 marks are awarded for a correct answer,2 marks are deducted for a wrong answer and 1 marks is deducted if the question is unanswered.Mary had attempted 20 questions and all answers were correct.Sue had attempted 28 questions but only 24 answer were correct.
在一个测试由30多项选择题,3个标记是颁给正确的答案,二个分数是一个错误的答案,扣除1标志.如果问题是扣除回答玛丽已尝试着20个问题,所有的答案都是正确的.苏曾尝试回答的问题,但只有24小时28是正确的.

在30多个组成的选择题，测试的3分获得了正确的答案，2分是一个错误的答案扣除一马克扣除如果问题是unanswered.Mary曾试图和所有20个问题的答案是正确的。苏曾试图28条问题，但只有24个答案是正确的。

在一个由30道不定项选择题组成的测试中，完全答对给三分，部分答对给二分，答错倒扣两分，不答扣一分。玛丽答了20题且全答对，苏答了28题但只有24题答对了。