_____ many times, but he still didn’t know what to do next.
He is going into hospital to have a small __________ her knee.
___ in experience, she didn’t manage to pass the interview.
Stress can be extremely damaging to your health. Exercise, __________, can reduce its effects.
In the meantime, the question facing business is whether such research is ______ the costs.
Lily would rather I _______ her at the airport yesterday, but I was then busy with a meeting.