【2012北京】—Mum, must I wash the dishes right now?—No, you ____.
This toy Mickey Mouse _______be Amy's. She's the only kid at the picnic.
Li Lei often takes care of the old woman after school.
The kid isn't old enough to go to school.
When a child realizes he should stand on his own feet, he has grown up.
Lucy met her mother in the park by chance.