防无球队员始终要保持对手和球在自己的视线范围内，要做到（），要根据球和进攻队员的位置选择不同的防守位置。
参考答案：人球兼顾
— What ______ your bike yesterday?
— It didn't work. [ ]
A. was happened in
B. happened in
C. was happened to
D. happened to
具有消骨鲠功效的药物是（）
A.威灵仙
B.鱼腥草
C.蒲公英
D.天麻
E.牛膝
