21.The teacher corrects our exercises at home
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22.The boys started a dancing class last week.
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23.George met Mary at the dance
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24.He left the letter on the desk.
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25.Everyone will see the Picasso exhibtion soon.
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26.We must finish those maps by seven o'clock
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27.She should send it to me immediately.
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28.The mailman is delivering the mail now
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29.He has to return that package today
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30.The police are holding him for further questioning.
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31.They may organize a new race next month
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32.The postman must send this bag by airmails
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33.The citizens are defending the town bravely
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