Words _________ me when I wanted to express my thanks to him. I just held his hands

firmly, choking.

A．left

B．encouraged

C．reminded

D．failed

附条件合同中，当事人为自己的利益不正当地阻碍条件成就的( )

A．合同无效
B．视为条件成就
C．视为条件不成就
D．应承担违约责任并赔偿对方损失