— What do you think of investing in today’s stock market? — There are many risks, but also many         gains．

—Is the White House _________ to ordinary visitors?  —Of course. 

He is ______to win the political campaign and becomes the president.

He is perfectly __________ to live in the mountains and paint pictures all day, even though he is of poor health.

There is no reasoning with such a      woman as Lucy. You might as well talk to a stone as try to argue with her.