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1. Mastering this speciality is an indispensable thing.

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2. In repairing these parts, he developed great skill.

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3. We came here for mastering this specialty. , .

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1. The man delivering this lecture is our professor.

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2. Studying a foreign language students should learn the words.

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  including considering following

 

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We received valuable information.

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2) II (III )

The machine designed by him will help us greatly.

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3) provided , ;

Provided he comes he will help us.

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We have discussed the efficiency of the device used.

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) ed, ( ) II, .

The substance heated changed its properties.

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it, that, one.

1) It.

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It is necessary to master this speciality.

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) it , it . , , .

Where is the map? It is on the wall.

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2) That .

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They know that we will help them.

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The machines that you see are produced here.

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) That , , .

Give me that textbook.

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This method is more efficient than that of your team.

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3) One .

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One must study a foreign language regularly.

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Take my pen. Thank you, Ive got one.

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