—Believe it or not, last month in America I came across the girl whose photo was in the drift bottle got three years ago .   —Really？That’s the most surprising          I’ve ever heard of！

One of the consequences of our planet's being warming up is a（n）_______ in the number of natural disasters. 

In the _____ of rain in the process of planting trees, you must stop.

After the flood, what we did first was to provide      for the homeless families.

As she walked along a         , a door suddenly burst open, as though forced by someone behind it.