Is that your pencil case ____the lost and found case?
To ____ nature is to help ourselves, or we will be punished.
The panda isn’t _____to go through the hole.
You should keep your eyes _____ when you do eye exercises.
---Mom, there is little milk,______? ---No,there isn’t. Could you please go and buy some?
If you can’t read the new words, you may __ in the dictionary.