Buying train tickets与Buy train tickets有何区别?

Buying train tickets与Buy train tickets有何区别? 题目Buying train tickets与Buy train tickets有何区别? Just as I was buying the tickets,the train leftjust as just as Theg are buying train tickets at the train station(改为否定句)拜托各位了 3Q 英语翻译Booking train tickets online is convenient and rapid compared with buying them over the counter at railway stations where one has to wait for a long time. buying tickets是什么意思,快(⊙o⊙) plane tickets are more expensive than train ticket.同义句train tickets are_____ ______ _______plane tickets. The air tickets are ______than the train tickets.(expensive) it is recommended that the system of buyingIt is recommended that the system of buying train tickets in real names ------ out during the Spring Festival.A.will be carried B.be carried C.to be carried D.is carried tickets,women,are,the,buying,some.造句怎么造? they are buying tickets对画线部分提问 I'll leave buying the tickets to you为什么要用buying 2._________ you _______ (buy) the train tickets to Nanjing? It is very difficult to buy train tickets or air tickets The air tickets are （ ）（ ）than the train tThe air tickets are （ ）（ ）than the train tickets.（expensive） 填空. We spent 100yuan buying two movie tickets.同义句~It ___ ____ 100yuan ___ ____ two tickets.Two movie tickets _____ _____ 100yuan. people should stand in (q ) and wait for their turn when they are buying the tickets we spent 100yuan buying two movie tickets 三个同义句急 急 急