Don't worry about ___ haven't arrived yet.
I’m sorry I can’t lend any money to you because I have ______ my purse at home.
You can’t throw the waste everywhere. You should keep the classroom _________.
The more you _____ things to chance, the less chance there is for you.
After all, not even _____ speakers of English find it easy to do some reading aloud correctly in RP (Received Pronunciation).
If the boy had _____ the dog alone, it wouldn't have bitten him.