This is the knife _____ I cut apples yesterday.
Hospital staff burst into cheers after doctors completed a 20-hour operation to have_______ one- year-old twins at the head.
Hearing the dog barking fiercely, away __________.
This basketball team had lots of excellent players, so its fans had never expected that it ________ have failed in the final.
Failure hurts grownups and children, but it can make a ________ contribution to your life once you learn to use it.
Then professor walked onto the platform and seated himself in a chair, ________ for answering questions.