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2. It is polite a gift when you visit somebody for the first time.
A. take B. taking C. to take D. to taking
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1. With the help of his friends,he changed a lot. Maybe that’s the of friendship.
A. station B. power C. decision D. invention
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3. Electricity ( flow) through thin wires.
4. The toy car gets power from (battery) .
5. Trees can produce ( chemistry ) to protect themselves from insects.
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l. The thick wire is (connect) to the power station.
2. 1 think you can buy something in (packet) .
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3. You can’t see cables because they are u the ground.
4. We should speak p to our teachers.
5. If you r to a question,you answer it.
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1. We call the thick wires under the street c .
2. He looks f to make such a mistake.
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