Micheal with his parents is going on a( ) visit to Beijing. .five days b. five-day c. five days'说明原因

Micheal with his parents is going on a( ) visit to Beijing. .five days b. five-day c. five days'说明原因
Micheal with his parents is going on a( ) visit to Beijing. .five days b. five-day c. five days'
说明原因

Micheal with his parents is going on a( ) visit to Beijing. .five days b. five-day c. five days'说明原因
选B 啊 a后面不能加复数啊 如果要用a 就不可以有five 而且 five-day 有五天的意思 第三个也是不能用five 如果下次在遇着 记着