ead many stories of Leifeng ,thisis the most touching one .

The old man has run four laps(圈) around the pool, while the younger one was almost after only one lap.[ ]

Mr Li, I can’t understand everything inclass.— Don’t worry! I’ll _____ _ the mainpoints at the end.

Could you tell me something about the boy in red— Sorry, I know nothing about him. We are_____ .

Neither of them knows the difference ________ the two and neither can we tell one ________the other