Find a mistake in the four underlined parts of the sentence.
1. Wash-bot is cleaner than Clean-bot, but Trash-bot is the cleanest one. à _________________
A B C D
2. I am the happy person because my mom bought me a robot. à _________________
A B C D
3. This robot can lift objects that are ten times heaviest than its body. à _________________
A B C D
4. Homework-bot is one of the smarter robots we have on this show. à _________________
A B C D
