It's __________ to get a satisfying job in the competitive society, so each of us should value what we've got.
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 ____.