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
推荐题目
Selecting a mobile phone for personal use is no easy task because technology ____ so rapidly.
#105002
A
is changing
B
has changed
C
will have changed
D
will change
His car _____now, so he has to go to work on foot.
#102557
A
was repaired
B
repaired
C
repairs
D
is being repaired
Where were you at lunch time? I   a seat for you in the dining hall.
#104548
A
saved.
B
was saving .
C
have saved.
D
had saved.