Q:

Bala's mother said. Will you lock the door, Bala? 

• 1
  Bala's mother told Bala that he need not lock the door.
• 2
  Bala's mother asked Bala if he would lock the door.
• 3
  Bala's mother asked Bala if he had locked the door.
• 4
  Bala's mother said lock the door.