She felt _____ of having asked such a silly question when the audience couldn't help laughing.

Children are ______ to meet with setbacks (挫折) as they grow up, so their parents don’t have to worry about it. 

I make a promise that I won’t waste any more of your ______ time. 

 As she is a _____ visitor to our house, we look on her as a part of our family.

There is a ________ look on her face. She must have seen something horrible.