______ bargaining is always such great fun?—Usually people consider it a test to see who can stand their ground longer.

Over the past decades, forest area ______ in China as a result of massive deforestation

While seeing the film, what had happened on the battlefield ________ in the old man’s mind.

With a lot of difficult problems_________, they are working hard day and night!

Lizzie was_____ to see her friend offat the airport.[ ]