初中英语问问the world ___all time .things never stay the same Ais

The world------.Things never stay the same.A is changingBcha The world ____ Things never stay the same Things never stay the same. ( )23.The world _____ all the time .Things never stay the sa all ____is/are changing.Things never stay the same The world___.Things never stay the same.A.changes B.is chang they are ___all the time All is changing,things never stay the same.为什么谓语动词用is呢? the name stay same we can ( )the world at the same time "the same things as The more things change,the more they stay the same什么意思