Bears ______ fat stores throughout the summer and fall to have energy enough to last them through their winter sleep.
Actually, _______ works hard can be _______ they want to be, whether it is a pilot, an engineer or a manager.
Rich people can afford to ________ hobbies they like
. Put the book back to the same place ________ you found it after finishing reading.
It’s reported that the bridge _______ next year will be very long.
Believe it or not, the Great Wall, which _______ by people, should be protected at once.