根据句意及汉语提示填空。

1. If I have a _______(机会), I believe I will do better next time.

2. All the football players must _______(遵守)the football rules.

3. It's very nice of you, but I can_______(对付) the box myself.

4. Dr.  White _______(发明)a kind of new medicine last year.

5. One of my teammates fell ill, so he can't _______(训练)with us now.

老张因身体不便将自己的一辆自行车赠与邻居的中学生小李，让小李上学使用，但要求小李今后回家途中给其捎带一些生活必需品，小李同意。第二天小李上学路上因自行车刹车不灵造成摔伤。下列选项中，表述正确的是( )。

A．对此老张不负责任
B．老张应负全部责任
C．老张应负部分责任
D．此事造成赠与合同无效