Before leaving the country, you must be in of a solid permit.
A. charge
B. possession
C. demand
D. case
网友回答
A. charge
(答案→)B. possession
C. demand
D. case
解析：B 句意为：在出国前你必须持有可靠的通行证。 in charge of负责，掌管；in possession of拥有，占有，持有； in demand非常需要，受欢迎的；in case of以防……发生。