The shy girl felt ______ and uncomfortable when she could not answer her teacher's questions. 

 _____ at his knowledge, all the students showed their respect for their teacher.

I must say, it’s a very     offer. The pay is higher and the working conditions are much better.

The passer-by jumped into the cold water to save the _____ boy, who cried for help, but it was too late and the boy was _______ at last.

It’s easy to learn a country’s culture if one is ____ with its language and customs.