4. Choose the correct item.
1. The robot uses its antenna to connect with/on the Internet.
2. New voice recognition software can identify you with/by the tone of your voice.
3. Hi-tech robots can now work by/as receptionists or maids.
4. The girl had a smile on/to her face after the robot told a joke.
5. Some modern robots look almost exactly like/as human beings!
6. Pepper the robot talks in/to people and makes them feel better.

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