--- Did you finish _____ the book?---Yes, I did. Thanks ____ your dictionary, I had a better understanding of it.
The railway______ Qinghai to Tibet is the longest plateau (高原) railway in the world.
_____ of the twins has been there before.
You can _______the cake _______ten pieces.
Tom is in a bad mood. Let’s .
This photo reminds me the days when I worked the farm with my friends.