问题描述:
This is my roon ,____there is a picture of my family.回答一个问题
选项
A:on the back wall
B:on back wall
C:at the back wall
D:at back wall
说出为什么
选项
A:on the back wall
B:on back wall
C:at the back wall
D:at back wall
说出为什么
问题解答:
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