Working in the kitchen for years made Tom ____ a good cook.
. Nobody believed his reason for being absent from the class ______ he had to meet his uncle at the airport.
People ran out __________ as fire tore through the building.
The key ____ English well is to read more when ____.
The people had to _______ the new rulers when they lost the war.
People have become aware ______the fact that carbon dioxide, poison to the environment, contributes_____ air pollution.