—________ when has the country been open to international trade?—1978,I suppose.
Generally speaking, _______ graduate from ________ famous university is more likely to find a job.
They had their electricity __________ because they didn’t pay the bill.
The telephone system _________ during the big earthquake in Sichuan Province.
It was such an __________ performance that it ___________ all the audience.
This picture was taken a long time ago. I wonder if you can __________ my father.