Giviog 22.up maker to go back to full time caudation was s a big________, but now I know was the best decision I ever made.

It said the country's confirmed H7N9 cases were isolated and there has been no______ of human-to-human transmission.

Eric was well prepared for the computer test so that he could be positive about passing it on his first________.

Niagara Falls is a great tourist      drawing millions of visitors from all parts of the world every year．

---A man is not born in ____ of knowledge.---True. We all gain our knowledge by keeping on learning in our life