题目内容
6. I can't find my books. I'm sure I must on the bus. (leave)
我找不到书了,我确定我准是把它们忘在公汽上了。
6. have left them对已发生动作的肯定推测用must have done表达。
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题目内容
6. I can't find my books. I'm sure I must on the bus. (leave)
我找不到书了,我确定我准是把它们忘在公汽上了。
6. have left them对已发生动作的肯定推测用must have done表达。