it's about four twenty.同义句

it's about four twenty.同义句 What time is it?(变为同义句） It's four twenty.(变为同义句） It's three twenty.(改为同义句) it's four twenty-three It's about twenty minutes ' walk to the park 同义句 It’s about nine twenty it's four forty - five ( 同义句 ） It's a quaiter past four.同义句 A day has twenty-four hours(同义句) the shop is open twenty-four hours.同义句 It's twenty minutes'walk from my home to the school.改为同义句it_ It's about four sisters growing up.句中的grow为何用ing形式?