根据句意,用括号内所给单词的适当形式填空。

1. My brother has many _________ (toy) in his hand.

2. Are the shoes ________ (you)?No, they are Jim's.

3. At weekends, I usually go ________(run) for half an hour.

4. He ________ (real) doesn't know how to look after a dog.

5. The clothes over there are the _______ (play) in our school basketball team.

甲公司与乙企业在签订合同时约定，由乙企业将一张1万元的国债单据交付甲公司作为合同的担保。该种担保方式在法律上称为() 。

A．抵押

B．动产质押

C．留置

D．权利质押