In those days，our ________concern was to provide people who were stopped by the snowstorm with food and health care.
A．normal B．constant C．permanent D．primary
In those days，our ________concern was to provide people who were stopped by the snowstorm with food and health care.
A．normal B．constant C．permanent D．primary
D [primary“主要的，第一位的”；primary concern 意为“主要关心的”。其他选项均与句意不符。]