—Mr. Li, let’s go fishing this weekend with Lao Wang, shall we?—I’d love to, but nobody knows if he _______ free then.
Lily and her sister look the same. I can't tell one from_______.
---Peter knows many people here. ---_________________
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.