.-where is jack? -I think he is still in ___ bed,but he might be in ___ bathroom

题目

.-where is jack? -I think he is still in ___ bed,but he might be in ___ bathroom
A./;/ B.the;the C.the;/ D./;the
我觉得这四个答案都可以,怎么分析?

答案

d
in bed 是固定搭配,意思是睡觉
因为bathroom是特指,所以要用定冠词