Hi, I'm Bob. This is my bag. It's blue. Three books are in it. A pencil box is on the bag. It's open(开着的). A pencil is in the pencil box. Where is my ruler? Oh, it's under the bag.
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（1）
Bob has a ______ bag.
A . blue
B . black
C . brown
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（2）
______ books are in the bag.
A . 2
B . 3
C . 4
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（3）
A pencil box is on the ______.
A . cap
B . chair
C . bag
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（4）
A ______ is in the pencil box.
A . pen
B . pencil
C . crayon
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（5）
A ruler is ______ the bag.
A . in
B . on
C . under
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