The time he has devoted ________ the disabled is now considered ________ of great value [ ]

Some boys are playing badminton, and____ are running

(2014·福建名校质量检查)The United Nations is trying to free the world________the threat of war

I was surprised by his words ,which made me recognized ______silly mistakes I had made

下列各句中，没有语病的一句是（ ）