问题：
【题文】— Hello, Sandy. This is Jack. What are you doing?
— I’m watching a match. It started at 7 p.m. and _____ on for another half an hour.
A．has been
B．was
C．had been
D．will be
【题文】— Hello, Sandy. This is Jack. What are you doing?
— I’m watching a match. It started at 7 p.m. and _____ on for another half an hour.
— I’m watching a match. It started at 7 p.m. and _____ on for another half an hour.
| A．has been | B．was | C．had been | D．will be |
参考答案：