Finish the second sentence so that is has the same meaning as the first

2.finish the second sentence so that is has the same meaning as the first
1.The Mekong river is longer than Red river
The Red river is......................................
2.I don't have a bookshelf in my bedroom
there  .................................
3.It is wrong of you  to talk  in class
You mustn't ............................
4.Nobody is older  than my grandmother in  my family
My grandmother is ...................................
mn nhớ đọc đề nha 
giúp mik giải vs thank nhìu