We watched the plane _________ behind the clouds. A: is disappearing B: disappeared C: being disappeared D: disappearing

Many kinds of wild animals ______ from the earth. A: being disappearing B: being disappeared C: are disappearing D: are disappeared

The<br/>biological species on Earth is disappearing at an ______ rate.

中国大学MOOC: People are in _____ need for excitement during the tough time when live sports are disappearing.

The little girl from the farm was disappearing and being ____ (replace) by a woman in the big city.

People are in _____ need for excitement during the tough time when live sports are disappearing. A: complicated B: impressive C: deserved D: desperate

They have been living under the most ______________ conditions. A: appalling B: appealing C: appearing D: disappearing

—What's wrong with the book —One page is ______. A: disappeared B: losing C: missing D: disappearing

The forest is disappearing because_______. A: the Penan are burning it B: the government is building villages C: the logging companies are cutting it down

According to the article we know it is ______ to prevent the forest from slowly disappearing. A: necessary but impossible B: necessary but difficult C: impossible and unimportant D: difficult and impossible