May the fourth is the day __________ we Chinese people will never forget. 
#42994
A
which
B
when
C
on which
D
why
推荐题目
--When are the Shutes leaving for New York?---Pardon? ---I asked ___________.   
#42669
A
when are the Shutes leaving for New York
B
when the Shutes are leaving for New York
C
when were the Shutes leaving for New York
D
when the Shutes were leaving for New York
I like music   ___ I can dance to. And you?
#43147
A
what
B
who
C
that
D
when