The security operation is gradually building in the lead up

求英语句子分析解释.The security operation is gradually building in th the sameness in operation There is no l__ in the building.We have to climb up to the 7 The tallest building in the world is( ). The building is the highest building in shenzhen. 8.The whole building is empty at weekends some security guar we go up and down the apartment building in the there is ( ) building in the city Thhere is arom in the building. the Great pyramid is the oldest building in the world Missing Security Code The security code was missing.In order It is the ( ) (lead) class in our country.