His sister left home in 1998, and _______since. 
#84460
A
had not been heard of
B
has not been heard of
C
had not heard of
D
has not heard of
推荐题目
Every minute is made full      of      our lessons well.
#69016
A
to use, study
B
use, studying
C
use, to study
D
used, studying
People who have _______ flood often say that’s _______ . 
#68929
A
experienced; terrifying experience
B
experimented; terrifying experience
C
experienced; a terrifying experience
D
experimented; a terrifying experience