—I believe we will have a good time with Miss Green in your birthday party.
—Maybe. But it is still a question, you know, she can spare time to e.
A. whether
B. /
C. that
D. which
网友回答
(答案→)A. whether
B. /
C. that
D. which
解析：句意：--我相信我们在生日聚会上将和格林小姐玩的很开心。--也许吧，但是你知道是否她能有时间来还是一个问题。这里it是形式主语，whether引导的是真正的主语从句，whether在从句中不作成分，但是有词意，故选A。