-- Why not make a call to Jenny right now?-- No，we’d better notIt’s 3：00 a.m. in London．H

-- Why not make a call to Jenny right now?
-- No，we’d better not．It’s 3：00 a.m. in London．He is likely ．
A. sleeping
B. to be sleeping
C. to have slept
D. slept

A. sleeping(答案→)B. to be sleepingC. to have sleptD. slept解析：试题分析:句意：——为什么现在不给Jenny打个电话呢？——不，我们最好别打电话。现在是伦敦时间凌晨3点钟。他很可能正在睡觉呢。固定句型：sb is likely to do =it is likely that …..,意思是“某人可能做某事”，故答案选B。

就是这个解释