Here’s the completed exercise using the words provided:

1. It’s not an **automatic** watch. It’s got hands.
2. If you play this stereo on **maximum** volume, you'll go deaf!
3. It’s not an **artificial** experiment. In fact, it’s really simple.
4. Are leather chairs more comfortable than **plastic** ones?
5. There aren’t any windows in the lab, so all the light is **digital**.
6. Was it an **exact** decision, or had you thought about it for a long time?
7. The lights are **automatic** – they come on when you enter the room, and go off when you leave.
8. Each person's fingerprints are **unique**. No two people have the same fingerprints.
9. The **minimum** number of patients necessary to test the new drug is 50. Any less than that and the scientists won't know if it works properly or not.
10. I can't remember the **exact** year it was discovered, but it was around 1976.