She came with a large ________ of yellow roses in her hand.

Shelly has been preparing carefully for the driving test so that she can be sure of passing it at her first________.

Independent innovation has brought us a________in profits,40% higher than in the traditional way.

The ________ of school leavers that go to university is about fifty percent.

The Students’ Union was founded for the________of them.

Your work experience is a big________in the job market but your poor eyesight will limit your choices.

Obama’s success in presidential election proves that the color of one’s skin shouldn’t be a________to success.

Teachers have to constantly update their knowledge in order to maintain their professional________.                                        (2011·江苏，27)

Giving up my job to go back to full­time education was a big ________，but now I know it was the best decision I ever made.                                      (2011·湖北，22)