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Ahmadi Nacer Eddine
辅导教师
They__________learnt English.
could have
should have
must have
80 人已做了小测试
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2023年6月9日 10:28
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回答 · 3
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Why it's must have and not could have ?
2023年6月9日
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All three are correct, but they have different meanings: They could have learned — It was possible for them to learn They should have learned — They had an obligation to learn They must have learned — I am sure that they learned
2023年6月10日
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must
2023年6月9日
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Ahmadi Nacer Eddine
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阿拉伯语, 英语, 法语, 其他
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