_______she is not so cheerful________she used to be?

In the history of Chinese revolution, Taierzhuang Battle was a ________ battle in which both sides suffered heavy losses.

--- What’s the model plane look like?--- The wings of the plane are _____ of its body.

A best friend is one who can always read your minds when you are at a loss for the ________ words to complete your thoughts.

 When it comes to the civil war in Syria, the US government’s attitude towards it has experienced a(n)_______ change , which may have a positive effect on Syria present situation.