根据所给图片，填入合适的介词补全句子。 1. The picture is __
题型：选择题
问题：
根据所给图片，填入合适的介词补全句子。
1. 
The picture is ______________ the bed.
2. 
The slippers are ______________ the bed.
3. 
The TV is ______________ ______________ the bed.
4. 
The dresser is ______________ the bed.