Will you do me a favor to have dinner with me at seven this evening?—– I’m afraid I can’tI ______ a lecture at the meeting hall at the time

How long do you suppose ______ we appliedfor the job ________ we had been trained .

He failed in the exams and only then _____ how muchtime he had wasted.

Liu Xiang’s breaking the record in the Asian Games wasan exciting moment, ______ all of us will never forget.

This school was _____ in 1950 and has a history of nearly sixty years.[ ]