I won’t tell the student the answer to the math problem until he _____ on it for more than an hour.[ ]

下列词语中加线的字，每对读音完全相同的一组是(　　)

The policeman told us __________ the street when the traffic light was red.

Many people agree that there has never been a more splendid opening ceremony than ______ of the Beijing Olympic Games in history.

_____ I accept that he’s not perfect in many aspects, I do actually quite like the man.