Is this hovercraft the one that made its first public flight in 1959?中的that可以省略吗,为什么

Is this hovercraft the one that made its first public flight in 1959?中的that可以省略吗,为什么 Vortex Hovercraft什么意思 急求英语翻译 .You can travel by hovercraft if you do急求英语翻译.You can travel by hovercraft if you don't mind the noise, and that takes forty minutes. whose T-shirt is this【翻译】 this t-shirt is made of c_____ How much is this T-shirt?中文翻译 This is salad. I don't like () 英语翻译Is this your t-shirt t翻译 This T-shirt is cheap.（同义句） This T-shirt is _ _. Don't worry.This mistake is no快!Don't worry.This mistake is not very (). This T-shirt is expensive,that one is ___________.【填空】 填空:1.Hello,this is Bill.Is Betty(t ) 用what,where,how填空 ( )is this?t is''k''. This is our t().She is from Canada. (is.it)this a wastebasket?no.it(is.isn't ) ()T-shirt is this?()this your ()? No,()(). ()()is your T-shirt? My T-shirt is blue ,()this T-shirtis yellow. I think it's Zhang peng . is this your watchAyes,it's Byes,this is Cno,it isn't Dno,it is Is this a pan?____,it isn 't.Is this a pencil?_____,it is.