------I’m worrying about my coming examination. ------Well, you will succeed in the end _______ you work with a strong will.
If a healthy environment is gone, ________ everything that our life depends on.
—Under no circumstances ________ the door to the Data Centre unlocked. —I promise I'll be more careful in future.
The drug used to treat this disease causes bad side effects, some of which ________ deadly.
.No sooner ________ down on bed ________ the telephone rang.
________ about wild plants that they decided to make a trip to Madagascar for further research.