The little girl walks as if she _________ an old woman.
My son is very shy, but can you imagine ____ at the English party?
The Chinese ____ prefer tea to coffee.
Although he likes playing tennis, he is ____ but a good tennis player.
Professor Li, who I ____ abroad, still teaches in Peking University.
--- How do you feel about taking the job in Los Angeles? --- ____? It's the biggest company in the country.