A broad smile spread ________ Jack‟s face when he eventually gained a scholarship.A.across B.through C.at D.in 请问CD为什么不对,

问题描述:

A broad smile spread ________ Jack‟s face when he eventually gained a scholarship.A.across B.through C.at D.in
请问CD为什么不对,

A.across表示从(某物)的一边到另一边; 横过(某物)
笑容在脸上扩散,是在表面而非内部所以D不对;at 只是单纯强调在...上面