After we came into the house, we found him lying on the ground with his mouth _______ and eyes ________.
When you play sport, you need to guard ______ accidents.
Do you know ______? I want to see a funny film.
The Silk Road was ______ long that it passed through many countries.
When you ______ a difficult task, try to continue with it and finish it.
— There are dark clouds, and the wind is blowing strongly.— It ______ that a typhoon is coming.