-----Did you have a hard time traveling back home?-----Yes, it ______ for four days when I arrived in Guiyang and all the roads______ covered with ice.
Seeing the tiger walking ______ them, the small animals ran ______ all directions.
I f you cheat in the exam, you will never______it.
It was a pity ______ John wouldnt be able to spend his vacation with me.
Our success depends ______ everyone works hard or not.
Though he is 10 years old, he doesnt know that 2 ______ by 4 makes 8.