It is quickly和It is fast 哪个是对的6分钟之内

It is quickly和It is fast 哪个是对的6分钟之内 It is late.Please f______your homework quickly. the train is coming.it runs （quitely slow quickly ） the world ___(it) is changing very quickly The food t______ is cheap and it comes very quickly. the food there is cheap and it comes very quickly.Of course it is d____. 和《it is whose handbag is it和yes it is中is it和it is一样吗 more quickly和much more quickly有什么区别?如题.另外,It is ——to do something then do something——用more quickly,much more quickly,much quick 还是其他什么?原因是什么? he is a ___(able) boy .It is difficult forhim to swim quickly 英翻中：Modern medicine is developing so quickly that it is necessary for doctors to keeplearning 填空 China is developing quickly and it is a m____ country now. It is(). it is it is is it it is Is it