the cost of dry-cleaning is three times that of ordinary was

the cost of dry-cleaning is three times that of ordinary was This bridge is three times the length of that one.. “The scie of the box is three times of that of that one ”这个句 The population of the city is three times what it was in the The population of the city is three times ____it was 50 year A is three times the size of B这个句型中 three times the size of The present population of this city is three times（ ）it was The output of our factory is now three times what it was thr 这棵树是那棵树的三倍高.This tree is three times the height of that one. 6.In this workshop ,the output of July was three times （）of His weight is three times of mine. 请问it was worth saving two boys at the cost of three students