Only by seizing every possible_____ to practice can you possibly hope to improve your spoken English.

You should follow________, and take medince three times a day.

—Why don’t you go to medical college and be a doctor?— Oh. It calls for a great deal of _____with long training, which I am afraid I don’t have. 

There was ___ traffic that nobody could move.

With the address I had no ______ in finding Mr. White’s house.