一、根据首字母或汉语提示完成下列句中所缺的单词。（每小题1分，共10分）
1. Tina is always n when she has a test , so she usually gets bad grades .
2. The boy is so s that he can carry the heavy box .
3. My bike is broken . Mark o to lend his to me .
4. His father became b in the accident . He couldn’t see anything .
