1,dien tu 1,.........class is your brother ..........?he is ..........class 6a.2,how..........do you go to the zoo?I some time go to the zoo.3,.........do you go to the bookshop ?because i want ........ buy some books.4,..........are you going ...........do?i ..........going to play games.5,HCM city ..........more crowded ..........HA NOI .6,your school bag ............ .............. expensive than my school bag.7,how.............traveling ...........bike?8,why don't we ............ sports.9,my brother likes .......... books ...........the library.