Excuseme,butcanyoutellme________?

Mr. Green has come up ______ a good idea to help hischildren get on well _______ each other.

The more one is _______ the English-speaking environment, the better he or she will learn the language

______on ten years ofobservation and study, Professor Wang announces that everyone dreams everynight, whether they realize it or not.

_______ do you eat fruit and vegetables—–Every day.