The trick

It Saturday morning. Jenny and Sarah in Mansfield Road. There a yellow bike in front of Burtons' bike shop. "Robert in the shop. That's his bike," Sarah . "Let's go and say hello," Jenny . "No. I an idea. Look, Robert a comic on his bike. Let's a trick!" And Sarah the comic from the bike.
Now the girls to the post office. They the bike shop from there. They good. "Ha ha, this a funny trick," Sarah says. "Yes, it's great!" Jenny says. A boy out of the post office behind the girls.
They the boy, and a shock - it's Robert! "Robert!" Jenny says. "But - isn't that your bike in front of Burtons' shop?" Sarah . "Where? Oh, there. No - my bike is yellow, too. But that isn't my bike," Robert says. Jenny at Sarah. And Sarah looks at the comic. " on, Jenny!" she says.
At that moment a boy out of the shop, on the yellow bike, and away.
"! Here's your comic!" But it's too late. Sarah and Jenny can't the comic back.