A:
1． These machine make crisps.
B:
2．A: It washes the potatoes. Look! This machine cuts the potatoes.
3． They are dangerous.
B:
4．A: This machine puts the crisps in the bags.
B: It’s fun.
A: You are a very good class. You can each have a bag of crisps.
B:
5．| A．Thank you, sir. |
| B．Welcome to our factory, children! |
| C．Sorry, sir. |
| D．Don’t touch the machines, please! |
| E．What does this machine do, sir? |
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