问题

The meetingfor two hours,but they stillany agreement
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
B:has been going on; haven’t been reached
C:was going on; haven’t reached
D:was going on; haven’t been reached
正确答案是: