Last Christmas, The Washington Post published an essay _______ what kind of Christmas dolls are popular with children in China.

 "We can’t go out in this weather,"said Bob,_______out of the window.

 Zhai Haifeng, the former director of the local housing administration bureau in Zhengzhou city, has been arrested after ________owing 29 properties.

_______, water changed into steam.

The transportation has improved a lot in our city, with two new roads _______ last year.