In April, thousands of holidaymakers remained ________ abroad due to the volcanic ash cloud.
Most experts agree that washing hands regularly is a ______way to prevent the spread of many diseases.
He suggested that we should _______ the instruction.
Spectators of horse racing come primarily to ________ the result of each race.
The NBA ______ of having the best basketball players in the world/
The plan was that the two parties should first reach an agreement on the basic ______, the details to be worked out later.