30. The old woman at the street corner must be lost. She is looking around　　 for someone to help her.

A. skillfully　　　　 B. extremely　　　 C. accidentally　 　　D. desperately

29. I expected too much of Jonathan, but what he has done really　　 me　　 . Now I begin to wonder if I can still rely on him.

A. give…out　　　 B. put…up　　　　 C. call…in　　　　 D. let…down

28.The 40-somethings found themselves in an embarrassing situation 　　　rapid changes in all aspects of society.

A. as a consequence of　 B. in favor of　 C. for the purpose of　 D. by means of