The couple look very excited，because their only son has been to Hong Kong University.
A. entered
B. permitted
C. agreed
D. admitted
网友回答
A. entered
B. permitted
C. agreed
(答案→)D. admitted
解析：考查固定搭配。固定搭配be admitted to…被…录取。句意：那对夫妻看起来很兴奋，因为他们唯一的儿子已经被香港大学录取。故D正确。