问题
选择题
—Where is my backpack?
—It's _____ the table, _____ the floor.[ ]
A. on; under
B. on; on
C. under; on
答案
答案：C
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—Where is my backpack?
—It's _____ the table, _____ the floor.[ ]
A. on; under
B. on; on
C. under; on
答案：C