Climb to FL280 ______ until ______

Not until _____ ten _____ to school. Cook the onion until it has _________. They ( ) until the bell rang. They worked in the field until the sun _________ .   Not until midnight（）raining.   They ______ the train until it disappeared in the distance. Not until last year did the author _____ Not until _______ smoking ________ healthy lungs. They won't be back until the work （）. Not until the war was over _______ to school. They _ the train until it disappeared in the distance. It was not until midnight ____________ the camping site. Not until many years later______ It was not until midnight（）they reached the campsite. We will wait until everyone ________ back. People ____ any flowers until May. They won’t be back home until the work _____. [ ] It was not until midnight they reached the camp site. It was a magic night until the spell was broken. It was a magic night until the spell was broken.