The happy children were making _______ the coast, where they would see the sea for the first time in their lives.
The research is so designed that once _______ nothing can be done to change it.
“What do you think made Mary so upset?” “_______ her new bike.”
“How do you deal with the disagreement between the company and the customers?” “The key ______ the problem is to meet the demand ______ by the customers.”
Finding her car stolen, _______.
A cook will be immediately fired if he is found _______ in the kitchen.