__________ fire, all exits must be kept clear.
It is by no means clear the president can do to end the strike.
When deeply absorbed in work, ________ he often was, he would forget all about eating or sleeping.
When you are done with the book, just give it to Lucy or Helen or __________.
Nothing is so easy as ________ parents to raise their expectations of their children too high.
Not until he retired from teaching three years ago having a holiday abroad.