Is that a boy swimming in the lake? I can't find out ___________._英语解答

Is that a boy swimming in the lake? I can't find out ___________.
A that it's a boy or a girl
B whether it's a boy or a girl
选A还是B?为什么?怎么翻译?

人气：306 ℃　时间：2020-03-27 16:41:30

解答

选B 因为whether.or.是固定搭配 find out 后面貌似不能加that了