It is only when you nearly lose someone ____________ you fully realize how much you value him.
After supper she would sit down by the fire, sometimes for ____ an hour, thinking of her young and happy days.
Many countries are increasing their use of natural gas, wind and other forms of ____.
Here's my card. Let's keep in ____.
I have tried to keep his advice in ____ when writing this book.
--- Can you shoot that bird at the top of the tree? --- No, it's out of ____.