2017全球总决赛资格赛:waht are the usual tricks advertisers use to persuade customers?

waht are the usual tricks advertisers use to persuade customers? The students are ___ in class than usual. They are sleepy. it is usual the custom _____ the chinese ------anything about the accident,he went to work as usual. Round up the usual suspects.这句话什么意思? we are the stranger Are the cartoon good? We are the world ??? we are the world we are the champions