We are not sure if it ___________tomorrow. If it _________, we won’t go hiking.
He made up his mind to devote his life _____ pollution ______ happily.
The players are passing the football from one to _____ in the football field.
_____ great progress he has made! I really think it’s _____ great success.
People in Yancheng are proud of ________ they have achieved in the past thirty years.
Children need friends _____ their own age to play with.