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The man who is standing there is a clown.

=> The man ______ there is a clown.

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The envelop which lies on the table has no stamp on it.

=> The envelop _____ on the table has no stamp on it.

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Benzene, which was discovered by Faraday, became the starting point in the manufacture of many dyes, perfumes and explosives.

=> Benzene, _____ by Faraday, became the starting point in the manufacture of many dyes, perfumes and explosives.

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The students don't know how to complete the assignments ______ by the teacher yesterday.

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All the astronauts who are orbiting the earth in space capsules are weightless.

=> All the astronauts _______ the earth in space capsules are weightless.

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All students who don't hand in their papers on time will fail in the exam.

=> All students ______ in their papers on time will fail in the exam.

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I saw many houses that were destroyed by the storm.

=> I saw many houses _______ by the storm.

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Tieu Vy is the most beautiful girl _____ the Vietnam Beauty contest.

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The last person _____ the room should turn off the lights.

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Nam is the smartest boy _____ difficult questions easily.

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We visited the church _________ in the 18th century.

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The girl ________me this gift is my best friend.

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The first letter _________ by my grandma was kept carefully in a box.

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The nurse_________from Japan can speak English well.

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A man ________ met his brother for the first time on stage.

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Today, the number of people _______ from AIDs is finally decreasing.

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He is the second man_________in this way this month.

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One of the girls________in that company caused an accident.

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The study said that the laziest children ________hard usually had bad marks.

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Two men ________ told everyone exactly what they thought of her.