“We_____ the train had we left earlier,” the wife complained to the husband.

By the time I saw the angry expression on his face, I ______ exactly what I was having to face. But not for a moment ______ I should quit.

____ about the man wearing sunglasses during night that he was determined to follow him．

 The dying old man opened his mouth as if ____ something. 

 We should well balance our work and relaxation, and only by doing that, as everybody would agree , ______ a good state of mind.