改成复数形式.1.Is that a bus?2.What's thia?It's a box.3.Where is the pen?It's in the desk.

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改成复数形式.1.Is that a bus?2.What's thia?It's a box.3.Where is the pen?It's in the desk.

Are those buses?
What are these?
They're boxes.
Where are the pens?
They're in the desk.
放心...

1.Are those some buses?
2.what are those?They're some boxes.
3.where are the pens?They're in the desk.