People have planted a lot of trees and grass in order to ____ wind and sand in the desert.
Things like electronics, glass or other ____ objectsare often packed with an appropriate protective material to prevent damage.
Shortly after publication, the book became ____ because of the writer’s repeated use of the negative word "nigger" to refer to the black Americans.
Nearly 200 people entered the area ______ to mine diamonds in 2000, and eventually had to be driven off by the police.
Hearing the fire alarm, she escaped____ from the office, leaving everything behind, including those important documents.
Unlike the fossil fuels of today, biofuels are renewable sources, which mean that they will not____ easily.