Rewrite the following sentences beginning as directed

Rewrite the following sentences beginning as directed 
1.What is the distance between .Hue and Da Nang
   How ....................................................................
2.Hoa is a hard student 
    Hoa studies.....................................................
3.I will turn off the lights when leaving a room or giong to bed 
    The lights .......................................................................
4.We will use less electricity in the future
   Electricity .......................................................................
5.Why isn't this TV working now ?
    What's.......................................................................
6.I ofter went to primary school on foot 
  I used to ..............................................
                               M.ng giúp mk nha mk đang cần gấp 
                                                    Cảm ơn ^^