摘要：. It’s a pen.
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—It's a pen, ______?
—It's a pencil.
—It's a pencil.
[ ]
A. what is this
B. and what is this
C. this is what
D. what's it
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B. and what is this
C. this is what
D. what's it
It’s a funny ________ to make a pen with a machine in it. Have a try.
- A.trouble
- B.idea
- C.look
- D.time