A man cannot smile like a child,________ a child smiles with his eyes,while a man smiles with his lips alone.
____ from his appearance, he must be from the north.
Our town has dozens of factories, ____ several sawmills.
What should the people do to solve the food problem if they live in hilly areas ____ is hard to grow crops?
Television, marked by rapid change and refinement, is entering a new period, ____ to reshape our life and our world.
---- Does anyone want to go to the theatre? --- Whom would you rather ____ with you, John or Ted?.