_________ you may have, you should gather your courage to face the challenge.

A．Whatever serious a problem

B．However serious a problem

C．However a serious problem

D．No matter how a serious problem

我国真正实现“老有所医”主要依靠（）

A.个人力量

B.家庭力量

C.集体力量

D.国家力量

E.国家、集体、个人合理分担