1.What is the most overcrowded city in CHina?
2.The birth rate is increase
3.there are always traffic jams in rush hours
4.turning off...?
5.he quit smoking?
6.be taken to...
7.one of the most....world,isn't it?
8.is shortier than him now
9.invite us...week?
10.studies worse than Minh
11.has more books than me

1/ You didn’t remember to turn off TV last night, did you?
2/ Why doesn't he stop smoking ?
3/ We will be taken to the zoo by our mother this weekend.
4/ Pollution is one of the most serious problem in the mordern world, isn't it ?
5/ Tom's older brother is not as tall as him.
6/ Did she invite us to her birthday last week ?
7/ Nam studies worse than Minh.
8/ He has more books than me.