One of our rules is that every student wear school uniform while at school.

Liu Qian, a magician for Taiwan, ______ audience of thousands on the 2009 CCTV Spring Festival Show.

They applied first aid to the seriously wounded driver, or he __________.[ ]

What do you think is the best way to the pollution problem

Studies show that people are more _____ to suffer from back problems if they always sit before computer screens for long hours.