It's surprising that your brother ______Russian so quickly—he hasn't lived there very long.
One more week, ________ we will accomplish the task better.
He never thought that his success came ________ he least wanted it.
I was completely terrified when I suddenly saw a dark figure leaning ________ the door in front of me.
The sixyearold girl infected with the H7N9 bird flu is in a ________ condition after receiving treatment.
Paul's mother had him ________ because she couldn't bring him up herself.