have you ever heard a tiger ___(bite)a girl?并说明为什么
问题描述：
have you ever heard a tiger ___(bite)a girl?并说明为什么
答
bitten
答
to bite 做老虎的谓语
答
bite
hear+宾语+宾补
bite a girl做宾补
bite与tiger关系是主谓所以有可能是biting 也有可能是bite
biting表示正在
bite完成了
所以应该是 bite