He ______busy yesterday,or he______you with your experiment.

A．was;had helped

B．was;would have helped

C．had been;would have helped

D．were;would have helped

胺碘酮常见的不良反应有（）

A.肺纤维化

B.味觉障碍

C.呼吸困难

D.Q-T间期延长

E.角膜色素沉着