I _________ you, but I was busy all the time yesterday afternoon.

A．could help

B．had helped

C．helped

D．could have helped

擒拿可分为（）。

A.擒手、拿手、锁喉、抓肩。

B.拿头、拿腕、擒肘、擒指。

C.分筋错骨，抓筋拿脉。

D.拿骨、拿筋、拿穴。