With a large amount of housework ______, he would rather ______ at home, helping his wife with it, than go golfing. 

A．remaining to be done, stay

B．remained to be done, stayed

C．remaining to do, to stay

D．remained to do, staying

地球虽大，资源却有限，人口太多，难免“僧多粥少”，环境破坏。面对世界性人口、资源和环境问题，近年来，各国逐步形成了共识，这就是[ ]

①正确处理经济发展同人口、资源、环境的关系

②实施以发达国家为主体的节能改造战略

③把计划生育、控制人口增长作为各国的基本国策

④实施可持续发展战略

A、①②③④

B、①④

C、①②③

D、①③④