单选题 -- I'm sorry, but the boss isn't here yet. Shall I have him call you when he comes back?
-- No, I'll call him back. Ill call again in half an hour, do you think she______ ?

【正确答案】 D
【答案解析】一般将来时表示将要发生的动作，而将来完成时表示将来某个时间之前已经发生或完成的动作。根据语境可知是强调将来的结果，应用将来完成时。