---I fell off my bicycle and broke my leg yesterday.---Is that ____ you drank too much?
At our factory there are a few machines similar to ______ described in this magazine.
—I really can’t thank you enough — .
—What’s the matter with Tim?—Oh, Tim’s cellphone was left in a taxi accidentally, never ____ again.
It was believed that things would get worse, but ____ it is they are getting better.
I ____ to go for a walk, but someone called and I couldn’t get away.