—I thought you were building a ship, why not put it in the lake?

—Because it _______. What's more, it needs to ________. [ ]

A. would not finish,  repaired

B. hasn't been finished yet,  be repaired

C. won't finished yet,  be repairing

D. didn't finish,  repaired

“十二五”期间，我国依然面临“未富先老”的国情，人口老龄化、高龄化、空巢化将进一步加速。解决我国养老问题，实现“老有所养”的对策有

①加快经济建设，提供坚实物质基础    ②子女孝敬父母，注重老人精神慰藉

③弘扬敬老美德，营造孝亲敬老氛围        ④加强社会保障，健全养老保险制度

A．②③④

B．①③④

C．①②④

D．①②③④