More and more young people in China celebrate Christmas Day________December 25th．

Provide your doctor with a detailed medical history ______ he can give you the proper treatment.[ ]

Since we have failed many times, we should take a new approach ______ the problem.

Saddam Hussein was ___________ death by the Iraqi government; they declared that Saddamhad killed many people when he was in power.

Treat the flowers right and your garden will be the ______ of the neighborhood.