i'm always expecting tom,a close friend fromabroad,---- with

选C.
因为“a close friend fromabroad”是这个句子中的插入语,这个句子的主句应该是“I'm always expecting tom ____ with me for the holiday.”
这样就很明显了,主要是考察“expect sb to do sth”的用法,所以要选"to stay".