十七大召开以来,各级政府认真落实科学发展观,进一步增加对公共事业和公益事业的投入,不断完善社会保障体系。这表明国家致力于 ( )
—I often saw you____basketball during the summer holidays. —Yes, you are right. A. playing B. play C. to play
—The food here is very nice. Thank you for inviting me. — _____ I’m glad you enjoyed it.
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.