fill_in_multiple_blanks_questionAI 解答
问题文本听音频并进行动词变位（过去式）。注意动词“to be”（要与主语保持一致！）。 https://elearning.swissedu.net/pluginfile.php/661278/question/questiontext/222329/2/785931/audio%20s2%20past%20tense%20Lausanne.m4aVideo Player is loading.P...
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