By the 1930s the wolf had 【vanished】 from the Ame

The forty years from the 1930s to the 1970s was an important period

By the 1930s， the wolf had vanished from the American West.A.disappearedB.arrivedC.leftD.

By the 1930s the woff had vanished from th

Many kinds of animals have 【vanished 】from the ea

The story had an extensive 【popularity 】among Ame

By the 1930s the woff had 【vanished 】from the Ame