упражнение 3 ( плз срочняк )

"So you really think Alice might be gone?" asked Andrew , sounding worried.For andrew , it was cool having a ghost around ? especially one just his age who never played tricks on him.
" I hope so" said his sister. "You don't see her now , do you?"
Andrew shook his head. "Nope. She's not here."
He's right , thought Sam , who had another way of picking up on Alice. When Alice was nearby , there was a buzzing in his ears , a kind of secret ghost radar . And he wasn't hearing it now.
"Well , it's about time , " Robert said. "We're supposed to get rid of the ghosts we find , not keep them as pets."
Alice had scared him half to death more than once.