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ar r i v e at 7: 00 . 3 . — A m I suppos ed t o w ear j eans ? — N o,y ou ’ r e expect ed t o w ear a s ui t and t i e . 4 . — I s i t i m pol i t e t o keep ot h er s w ai t i ng ? — Y es ,i t ’ s v er y i m pol i t e t o keep ot her s w ai t i ng . 5 . — I s i t i m por t ant t o be on t i m e? — Y es , it ’ s i m por t ant t o be on t i m e . 語(yǔ)法在線(xiàn) 1 . be s up pose d t o do 的用法。 A:1. are Chinese people supposed to do when they meet for the first time? B:They 2. 3. 4. . shake hands. A:How about the Japanese people? B:They 5. 6. 7.