The speaker raised his voice but still couldn’t make himself ______.
Scientists think they have _____ in their attempt to find the causes of some major dieases.
. If you ever have the _____ to go abroad to work, you should take it.
I'd like to take _____ of this opportunity to thank you all for your cooperation.
I could tell he was surprised from the _____ on his face.
We had a marvelous holiday: only the last two days were slightly _____ by the weather.