—How long do you think it is ________ he arrived here?    —No more than half a year, I believe.    
#104908
A
when
B
that
C
before
D
since
推荐题目
The meeting        for two hours,but they still       any agreement.
#102274
A
has been going on;haven’t reached
B
has been going on; haven’t been reached
C
was going on; haven’t reached
D
was going on; haven’t been reached