问题
选择题
Is his school bag _____ the floor or _____ the wall?[ ]
A. on; in
B. on; on
C. in; on
D. at; at
答案
B
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Is his school bag _____ the floor or _____ the wall?[ ]
A. on; in
B. on; on
C. in; on
D. at; at
B
