1 . I can’t get my car ________ on cold days, so I’ve to try ________ the radiator with some hot water.

A．run; to fill

B．running; filling

C．running; to fill

D．ran; filling

2 . Parents and children should communicate more to ________ the gap between them so that they can understand each other better.

A．fill

B．strengthen

C．widen

D．narrow