Choose the best answer to complete these following sentences.

Formerly babies ............... of whooping cough.

Choose the words or phrases that are not correct in standard English.

Would you mind if I ask you a private question?

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Mai has stayed on her uncle's farm for last week.

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This is the first time I visited a famous place in Hanoi.

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You shouldn’t let your children playing with matches.

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They happily looked at their children to play in the yard.

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When he came, I watched a football match on TV.

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When Andrew saw the question, he were knowing the answer immediately.

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They asked me don’t talk during the discussion.

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I'm looking forward to hear from you .

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Our teacher told to us to spend more time at home practicing our pronunciation.

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People ............... that the earth is round before.

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Astronauts ............... in their spaceship, but they frequently work outside now.

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Tuberculosis ............... incurable before.

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These city girls are used ............... in the field.