1. 根据语境从方框中选择恰当的短语填空，有的需要变换形式

fall off, in time, pay attention, side by side, round the corner

1. （1） Sorry! I forgot to return your book to you
3. （2） Bob walkedinto the next street.
5. （3） On the way to school Jimhis bike and hurt his knees.
7. （4） Mrs Jones always tells her studentsto their spellings,
9. （5） I saw Lisa and her mother walkingin the park