--- An ant has two stomachs --- one for itself, one for others.--- Really? Quite interesting. I ____ anything about it.
#103271
A
don’t know
B
have known
C
haven’t known
D
didn’t know
推荐题目
His sister left home in 2009, and__since.
#101520
A
had not been heard of
B
has not been heard of
C
had not heard of
D
has not heard of
 She       volleyball regularly for many years when she was young. 
#99866
A
was playing
B
played
C
has played
D
had played
We are all _______about her safety . As far as I am _____, this case _____her . 
#103237
A
concerns ,concerned , concerns
B
concerned , concerned , concerns
C
concerns , concerns, concerned
D
concerning ,concerned ,concerns