All people,they are old or young,rich or poor,have been trying their best to help those they need since the disaster.CA.even if B.whether C.no matter D.however

问题描述:

All people,they are old or young,rich or poor,have been trying their best to help those they need since the disaster.C
A.even if B.whether C.no matter D.however

B
无论是老人还是孩子
whether...or

B

B whether...or...

C 无论