When _____ help, one often says “Thank you.” or “it’s kind of you”

From the deep valley ______, which had my heart in my mouth.

Are there any hobbies or sports you particularly like ?
_____ , look out for books, articles or magazines about them.

–What do you think of Nanchang?
－Nowhere else _____ such beautiful scenery.

Not until all the fish die in the river ____ how serious the pollution was.

—It’s nice. Never before_______ such a special drink!

Only when he was refused by the interviewer ____ the importance of knowing English.

Only in this way ______ solve the problem.

Not only ____ work faster, but also he worked better.

Only when you experience the bad earthquake taking place in Si Chuan______ the importance of life.