This is eraser,eraser is inThis is eraser,eraser is in the pencil box.A.a;The B.an;The C.an;An D.the;The(对了,)

问题描述:

This is eraser,eraser is in
This is eraser,eraser is in the pencil box.A.a;The B.an;The C.an;An D.the;The(对了,)

B