按要求转换下列句型。

1. The blue skirt is my friend's. (对划线部分提问)

    _____ _____the blue skirt?

2. Your mother is a teacher. (用a worker 改为选择疑问句) 

    _____your mother a teacher _____a worker?

3. Can't you see its name? (作肯定回答)

    _____, I_____.

4. You can put the books on the desk. (改为祈使句) 

    _____the books on the desk,______.

5. Jim is a friend of mine. (改为同义句)

   Jim is _____of _____ _____.

下列选项中，属于可以撤销的赠与合同的是( )。

A．经过公证的赠与合同

B．具有扶贫性质的赠与合同

C．具有救灾性质的赠与合同

D．具有情感因素的赠与合同