试题 试卷
题型：单选题 题类：模拟题 难易度：普通
吉林省长春市实验中学2017届九年级下学期英语第六次模拟考试试卷
—Good idea. I can read it on the train.
—They may cause .
—We have to do something to avoid danger.
—Yes. A life without a dream is like a bird without ________, which can't fly.
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