Question

28) Write "when” or “while”. They were sleeping the burglars broke into the house.​

Answer 1

They were sleeping when the burglars broke into the house.

Answer 2

While they were sleeping, the burglars broke into the house.

The word "while" is used in this sentence to indicate that the action of the burglars breaking into the house happened at the same time as the action of the people sleeping. It suggests that the burglars took advantage of the fact that the people were sleeping to carry out their illegal activity.