-Why didn't you turn up at the meeting?

-I ________ for a longdistance call from my father in England.[ ]

A．waited  

B．had waited

C．was waiting  

D．have been waiting

柳毒蛾6月中旬开始，老熟幼虫在树洞及砖石地下化蛹，蛹期为（）。

A.6天

B.8天

C.10天

D.12天