____ his happy look on the face, he must havepassed the exam this time.

Can I help myself to something to eat?— Of course, you are ______ to, you are our guest.

the construction of theQinghai-Tibet Railway, 33 migration overpasses have been made_______for herdsof Tibetan antelopes to go through their breeding grounds

The boy _______ in Xinjiang for five years when I heard his news.

I am not sure _______the Chinese football team has won in the 16th Asian Cup or not.