2019年mpacc考试英语真题——连词676

{01}All people, ________ they are old or young, rich or poor, have been trying their best to help those in
need since the disaster.
A.even if  
B.whether
C.no matter  
D.however
解析：
本题选B。

{02}The field research will take Joan and Paul about five months; it will be a long time        we meet them again.
A.after                            
B.before
C.since                            
D.when
解析：
本题选B。