We were swimming in the lake _____ suddenly the storm started.
.Some researchers believe that there is no doubt ____ a cure for AIDS will be found.
. We all hope that the flame will not _____ in such cold weather.
You are not in good health, I think. You could improve your _____ by running every day.
You can do whatever you like _______ you follow the school rules..
It is no good trying that method, because it won’t _______.