Which is the circuit diagram（电路图）of the picture on the right?
There _______ a pen on the desk. It is a black pen.
—Mum, my teacher, Mr. Wang. — Nice to meet you, Mr. Wang.
—John, what’s this _______ English? — It’s a computer.
This is ___ map and that is ____ orange.
---Would you like some bread? ---________. I am full.
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